Dr. Wapnir has extensive experience in breast conserving surgery and innovative techniques related to nipple-sparing mastectomies, making these available to all women.
Clinical decision making incorporates access to novel clinical trials that aim to improve diagnostic and therapeutic interventions.
- Cancer > Breast Cancer
- Cancer > Breast Cancer > Breast Cancer Clinical Trials
- Breast Cancer
- Breast Cancer - Surgery
- Breast Surgery
- General Surgery
- Nipple-sparing mastectomy, breast conserving surgery, sentinel node biopsy
Chief of Breast Surgery, Section of Surgical Oncology (2005 - Present)
Honors & Awards
Awards Committee, Assoc Women Surgeons (2004)
Working Group Breast Committee, NSABP (2000)
Protocol Chair Breast Cancer Local Recurrence Trial, NSABP (2006)
Publications Committee, American Society of Breast Surgeons (2010-present)
Visiting Scholar, Ben Gurion University of the Negev, Israel (2012)
Residency:New York Medical College Registrar (1985) NY
Internship:Lincoln Med and Mental Hlth Ctr (1981) NY
Fellowship:Robert Wood Johnson University Hospital (1988) NJ
Board Certification: General Surgery, American Board of Surgery (1986)
Medical Education:Universidad Autonoma Metropolitana (1980) Mexico
MD, Universidad A. Metropolitana, Medicine (1980)
BA, Goucher College, Biological Sciences (1975)
Current Research and Scholarly Interests
Clinical treatment trials in Breast Cancer, especially locally recurrent breast cancer. She is chair of multicenter national trial investigating the optimal systemic treatment for women who develop a local or regional recurrence of breast cancer after mastectomy or lumpectomy. Additionally, Dr. Wapnir has initiated studies to improve surgical outcomes in several areas : decreasing ischemic complications in nipple-sparing mastectomies through perfusion imaging and protecting arm lymphatics during breast cancer surgery. Her basic and preclinical research centers on exploring the activity of breast sodium-iodide transporter (NIS) in breast cancer. Translational research protocols elucidating the potential application of NIS-based therapies are ongoing.
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel With or Without Carboplatin in Treating Patients With Triple-Negative Breast Cancer
This randomized phase III trial studies how well doxorubicin hydrochloride and cyclophosphamide followed by paclitaxel with or without carboplatin work in treating patients with triple-negative breast cancer. Drugs used in chemotherapy, such as doxorubicin hydrochloride, cyclophosphamide, paclitaxel, and carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. It is not yet known whether doxorubicin hydrochloride and cyclophosphamide is more effective when followed by paclitaxel alone or paclitaxel and carboplatin in treating triple-negative breast cancer.
Evaluation of Pharmacodynamic Effects of IT-pIL12-EP in Patients With TNBC
Intratumoral plasmid IL-12 electroporation (IT-pIL12-EP) will be administered to approximately 10 patients with triple negative breast cancer (TNBC) with cutaneous or subcutaneous disease. Patients will receive one complete cycle of therapy, consisting of local injection of plasmid IL-12 (pIL-12) followed immediately by electroporation (EP), into accessible tumor lesions. IT-pIL12-EP will be administered in Days 1, 5, and 8 of the single 28-day cycle.
Immunohistochemical & Immunoblot Analysis of NIS (Na+/I-Symporter) in Archival & Frozen Tissue Sample
The goal of this study is to study NIS expression in benign and malignant breast and thyroid samples using archival formalin-fixed paraffin-embedded tissue sections.
Pilot Indocyanine Green™ Imaging for Mapping of Arm Draining Lymphatics & Nodes in Breast Cancer
To determine concordance between isosulfan blue (ISB) and indocyanine green (IC-GREEN™) in the identification of lymphatics and arm-draining nodes during nodal staging procedures in breast cancer.
A Clinical Trial Comparing the Combination of TC Plus Bevacizumab to TC Alone and to TAC for Women With Node-Positive or High-Risk Node-Negative, HER2-Negative Breast Cancer
The main purpose of this study is to learn if adding bevacizumab to standard treatment with chemotherapy (docetaxel, doxorubicin, and cyclophosphamide) for early stage HER2-negative breast cancer will prevent breast cancer from returning. A second purpose of this study is to learn if adding bevacizumab to treatment with chemotherapy will help women with HER2-negative breast cancer live longer. The researchers also want to learn about the side effects of the combination of drugs used in this study.
Stanford is currently not accepting patients for this trial. For more information, please contact Marilyn Florero, (650) 724 - 1953.
A Study of AC Followed by a Combination of Paclitaxel Plus Trastuzumab or Lapatinib or Both Given Before Surgery to Patients With Operable HER2 Positive Invasive Breast Cancer
The primary purpose of this study is to determine whether breast cancer tumors respond (as measured by pathologic complete response: the absence of microscopic evidence of invasive tumor cells in the breast) to combined chemotherapy of AC(doxorubicin and cyclophosphamide) followed by paclitaxel plus trastuzumab or lapatinib or both given before surgery to patients with HER2-positive breast cancer. Trastuzumab will also be given to all patients after surgery. The study will also evaluate the toxic effects of the chemotherapy combination, including effects on the heart, and will determine survival and progression-free survival 5 years after treatment. Also, the study will look at whether there are gene expression profiles in the tumor tissue that can predict pathologic complete response.
Stanford is currently not accepting patients for this trial. For more information, please contact Marilyn Florero, (650) 724 - 1953.
A Study of Palbociclib in Addition to Standard Endocrine Treatment in Hormone Receptor Positive Her2 Normal Patients With Residual Disease After Neoadjuvant Chemotherapy and Surgery
The PENELOPEB study is designed to demonstrate that in the background of standard anti-hormonal therapy palbociclib provides superior invasive disease-free survival (iDFS) compared to placebo in pre- and postmenopausal women with HR-positive/HER2-normal early breast cancer at high risk of relapse after showing less than pathological complete response to neoadjuvant taxane- containing chemotherapy. Considering the high risk of recurrence in patients after neoadjuvant chemotherapy and a high CPS-EG score, palbociclib appears to be an attractive option with a favourable safety profile for these patients.
Stanford is currently not accepting patients for this trial. For more information, please contact Amy Isaacson, 650-723-0501.
A Study of Trastuzumab Emtansine Versus Trastuzumab as Adjuvant Therapy in Patients With HER2-Positive Breast Cancer Who Have Residual Tumor in the Breast or Axillary Lymph Nodes Following Preoperative Therapy (KATHERINE)
This 2-arm, randomized, open-label study will evaluate the efficacy and safety of trastuzumab emtansine versus trastuzumab as adjuvant therapy in patients with HER2-positive breast cancer who have residual tumor present in the breast or axillary lymph nodes following preoperative therapy. Eligible patients will be randomized to receive either trastuzumab emtansine 3.6 mg/kg or trastuzumab 6 mg/kg intravenously every 3 weeks for 14 cycles. Radiotherapy and/or hormone therapy will be given in addition if indicated.
Stanford is currently not accepting patients for this trial. For more information, please contact Amy Isaacson, 650-723-0501.
Adjuvant Chemotherapy in Treating Women Who Have Undergone Resection for Relapsed Breast Cancer; Chemotherapy as Adjuvant for LOcally Recurrent Breast Cancer
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known whether chemotherapy is effective in treating women who have undergone surgery and radiation therapy for relapsed breast cancer. PURPOSE: Randomized phase III trial to determine the effectiveness of adjuvant chemotherapy in treating women who have undergone resection for local and/or regional relapsed breast cancer.
Stanford is currently not accepting patients for this trial. For more information, please contact Marilyn Florero, (650) 724 - 1953.
BETH Study: Treatment of HER2 Positive Breast Cancer With Chemotherapy Plus Trastuzumab vs Chemotherapy Plus Trastuzumab Plus Bevacizumab
The trial will determine the value of adding bevacizumab to chemotherapy plus trastuzumab in patients with resected node-positive or high risk node-negative, HER2-positive breast cancer.
Chemotherapy With or Without Trastuzumab After Surgery in Treating Women With Invasive Breast Cancer
This randomized phase III clinical trial studies chemotherapy with or without trastuzumab after surgery to see how well they work in treating women with invasive breast cancer. Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving more than one drug (combination chemotherapy) and giving chemotherapy after surgery may kill more tumor cells. Monoclonal antibodies, such as trastuzumab, can block cancer growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. It is not yet known whether combination chemotherapy is more effective with trastuzumab in treating breast cancer.
Stanford is currently not accepting patients for this trial. For more information, please contact Amy Isaacson, 650-723-0501.
Comparison of Two Combination Chemotherapy Regimens in Treating Women With Breast Cancer
RATIONALE: Drugs used in chemotherapy, such as fluorouracil, epirubicin, cyclophosphamide, and doxorubicin, work in different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known which combination chemotherapy regimen is more effective in treating breast cancer. PURPOSE: This randomized phase III trial is studying two combination chemotherapy regimens to compare how well they work in treating women who have undergone surgery for breast cancer that has not spread to the lymph nodes.
CPG 7909 + Local Radiotherapy in Recurrent Low-Grade Lymphomas
Brief summary TBD
Stanford is currently not accepting patients for this trial. For more information, please contact Cameron Harrison, (650) 721 - 7186.
Docetaxel and Cyclophosphamide Compared to Anthracycline-Based Chemotherapy in Treating Women With HER2-Negative Breast Cancer
RATIONALE: Drugs used in chemotherapy work in different ways to stop the growth of breast cancer cells, either by killing the cells or by stopping them from dividing. Giving the drugs in different combinations may kill more breast cancer cells. Giving combination chemotherapy after surgery may kill any tumor cells that remain after surgery. PURPOSE: This randomized phase III trial is studying different combination chemotherapy regimens and their side effects and comparing how well they work in treating women with non-metastatic breast cancer.
Stanford is currently not accepting patients for this trial. For more information, please contact Donna Adelman, 650-724-1953.
Docetaxel, Carboplatin, Trastuzumab, and Pertuzumab With or Without Estrogen Deprivation in Treating Patients With Hormone Receptor-Positive, HER2-Positive Operable or Locally Advanced Breast Cancer
This randomized phase III trial studies docetaxel, carboplatin, trastuzumab, and pertuzumab with estrogen deprivation to see how they work compared to docetaxel, carboplatin, trastuzumab, and pertuzumab without estrogen deprivation in treating patients with hormone receptor-positive, human epidermal growth factor receptor 2 (HER2)-positive breast cancer that is operable or has spread from where it started to nearby tissue or lymph nodes (locally advanced). Drugs used in chemotherapy, such as docetaxel, carboplatin, trastuzumab, and pertuzumab, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving more than one drug (combination chemotherapy) may kill more tumor cells. Estrogen can cause the growth of breast cancer cells. Hormone therapy using goserelin acetate and aromatase inhibition therapy may fight breast cancer by blocking the use of estrogen by the tumor cells. Radiation therapy uses high energy x rays to kill tumor cells. Giving combination chemotherapy and radiation therapy with or without hormone therapy may be an effective treatment for hormone receptor-positive, HER2-positive, operable or locally advanced breast cancer.
Factors Influencing Decision-Making About the Use of Chemoprevention in Women at Increased Risk for Breast Cancer
RATIONALE: Learning about how patients make decisions about using chemoprevention may help doctors plan treatment in which more patients are willing to choose chemoprevention to reduce their breast cancer risk. PURPOSE: This clinical trial studies factors influencing decision-making about the use of chemoprevention in women at increased risk for breast cancer.
Hormone Therapy With or Without Combination Chemotherapy in Treating Women Who Have Undergone Surgery for Node-Negative Breast Cancer (The TAILORx Trial)
This randomized phase III trial studies the best individual therapy for women who have node-negative, estrogen-receptor positive breast cancer by using a special test (Oncotype DX), and whether hormone therapy alone or hormone therapy together with combination chemotherapy is better for women who have an Oncotype DX recurrence score of 11-25. Estrogen can cause the growth of breast cancer cells. Hormone therapy may fight breast cancer by blocking the use of estrogen by the tumor cells or by lowering the amount of estrogen the body makes. Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving hormone therapy together with more than one chemotherapy drug (combination chemotherapy) has been shown to reduce the chance of breast cancer recurrence, but the benefit of adding chemotherapy to hormone therapy for women with node-negative, estrogen-receptor positive breast cancer is small. New tests may provide information about which patients are more likely to benefit from chemotherapy.
Stanford is currently not accepting patients for this trial. For more information, please contact Florero Marilyn, (650) 724 - 1953.
Letrozole in Treating Postmenopausal Women Who Have Received Hormone Therapy for Hormone Receptor-Positive Breast Cancer
RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using letrozole may fight breast cancer by lowering the amount of estrogen the body makes. It is not yet known whether letrozole is more effective than a placebo in treating patients with hormone receptor-positive breast cancer. PURPOSE: This randomized phase III trial is studying letrozole to see how well it works compared with a placebo in treating postmenopausal women who have received hormone therapy for hormone receptor-positive breast cancer.
Phase 2 Anastrozole and Vandetanib (ZD6474) in Neoadjuvant Treatment of Postmenopausal Hormone Receptor-Positive Breast Cancer
In this study we plan to study the combination of ZD6474, a dual inhibitor of EGFR and VEGFR-2 with anastrozole in the neoadjuvant setting for patients with Stage I-III breast cancer. The aim is to overcome mechanisms of resistance and simultaneously block multiple critical signaling pathways known to stimulate breast cancer.
Stanford is currently not accepting patients for this trial. For more information, please contact Marcy Chen, (650) 723 - 8686.
Radiation Therapy (WBI Versus PBI) in Treating Women Who Have Undergone Surgery For Ductal Carcinoma In Situ or Stage I or Stage II Breast Cancer
RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Giving radiation therapy in different ways may kill any tumor cells that remain after surgery. It is not yet known whether whole breast radiation therapy is more effective than partial breast radiation therapy in treating breast cancer. PURPOSE: This randomized phase III trial is studying whole breast radiation therapy to see how well it works compared to partial breast radiation therapy in treating women who have undergone surgery for ductal carcinoma in situ or stage I or stage II breast cancer.
Radiation Therapy and Either Capecitabine or Fluorouracil With or Without Oxaliplatin Before Surgery in Treating Patients With Resectable Rectal Cancer
RATIONALE: Drugs used in chemotherapy, such as capecitabine, fluorouracil, and oxaliplatin work in different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. PURPOSE: This randomized phase III trial is studying radiation therapy and either capecitabine or fluorouracil with or without oxaliplatin and comparing them to see how well they work when given before surgery in treating patients with resectable rectal cancer. It is not yet known whether radiation therapy and either capecitabine or fluorouracil is more effective with or without oxaliplatin in treating rectal cancer.
Radiation Therapy With or Without Trastuzumab in Treating Women With Ductal Carcinoma In Situ Who Have Undergone Lumpectomy
This randomized phase III trial studies radiation therapy to see how well it works with or without trastuzumab in treating women with ductal carcinoma in situ who have undergone lumpectomy. Monoclonal antibodies, such as trastuzumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Radiation therapy uses high-energy x-rays to kill tumor cells. It is not yet known whether radiation therapy is more effective with or without trastuzumab in treating ductal carcinoma in situ.
Radioactive Iodide (131I) Treatment of 124I PET/CT Detected Breast Cancers
This is a treatment protocol designed to accompany the ongoing institutional 124I PET/CT pilot imaging study for patients with invasive breast cancer. Women whose tumors express NIS [Na+I- symporter, sodium iodide symporter] and demonstrate radioiodide uptake on 124I PET/CT scans will be eligible for 131I treatment if, (1) tumor dosimetry calculations yield a cumulative radiation dose of at least 30Gy in target tumor, (2) estimated cumulative thyroid irradiation is less than 500 cGy and, (3) the therapeutic dose of 131I is in the range of 25 to 100 mCi.
Rosuvastatin in Treating Patients With Stage I or Stage II Colon Cancer That Was Removed By Surgery
RATIONALE: Rosuvastatin may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving rosuvastatin after surgery may kill any tumor cells that remain after surgery. It may also keep polyps from forming or colon cancer from coming back. It is not yet known whether rosuvastatin is more effective than a placebo in treating colon cancer that was removed by surgery. PURPOSE: This randomized phase III trial is studying rosuvastatin to see how well it works compared with placebo in treating patients with stage I or stage II colon cancer that was removed by surgery.
Stanford is currently not accepting patients for this trial. For more information, please contact Shannon Meyer, (650) 724 - 1953.
Scintigraphic Assessment of I- Transport in Metastatic Breast Cancer and Evaluation of I31I Ablative Therapy: (Part I) Radioiodide Imaging Study
The purpose of this study is to examine breast cancers that express the protein (NIS) that may be found in malignant breast tissues and to evaluate proteins found in blood and their relationship to NIS, to test whether iodide can be concentrated by breast cells to possibly treat some breast cancers with radioactive iodine, and to calculate the amount of radioactive iodine entering breast cancer cells, how long your cancer retains the agent as well as how much is taken up by other organs, particularly the thyroid gland.
SPY Intra-Operative Angiography & Skin Perfusion in Immediate Breast Reconstruction w/ Implants
The investigators hope to learn the value of the SPY ELITE® intra-operative angiography in reducing post-operative complications associated with low breast skin blood flow after breast reconstruction using implants.
Stanford is currently not accepting patients for this trial. For more information, please contact Shannon Meyer, 650-724-1953.
Suppression of Ovarian Function With Either Tamoxifen or Exemestane Compared With Tamoxifen Alone in Treating Premenopausal Women With Hormone-Responsive Breast Cancer
RATIONALE: Estrogen can stimulate the growth of breast tumor cells. Ovarian function suppression combined with hormone therapy using tamoxifen or exemestane may fight breast cancer by reducing the production of estrogen. It is not yet known whether suppression of ovarian function plus either tamoxifen or exemestane is more effective than tamoxifen alone in preventing the recurrence of hormone-responsive breast cancer. PURPOSE: This randomized phase III trial studies ovarian suppression with either tamoxifen or exemestane to see how well they work compared to tamoxifen alone in treating premenopausal women who have undergone surgery for hormone-responsive breast cancer.
Trial of AVB-620 in Women With Primary, Non-Recurrent Breast Cancer Undergoing Surgery
This is a Phase 1, open-label, dose escalation study in women with primary, non-recurrent breast cancer undergoing surgery. AVB-620 will be administered prior to surgery.
Stanford is currently not accepting patients for this trial.
Poor Prognosis After Second Locoregional Recurrences in the CALOR Trial
ANNALS OF SURGICAL ONCOLOGY
2017; 24 (2): 398-406
Isolated locoregional recurrences (ILRRs) of breast cancer confer a significant risk for the development of distant metastasis. Management practices and second ILRR events in the Chemotherapy as Adjuvant for LOcally Recurrent breast cancer (CALOR) trial were investigated.In this study, 162 patients with ILRR were randomly assigned to receive postoperative chemotherapy or no chemotherapy. Descriptive statistics characterize outcomes according to local therapy and the influence of hormone receptor status on subsequent recurrences. Competing risk regression models, Kaplan-Meier estimates, and Cox proportional hazards models were used to evaluate associations between treatment, site of second recurrence, and outcome.The median follow-up period was 4.9 years. Of the 98 patients who received breast-conserving primary surgery 89 had an ipsilateral-breast tumor recurrence. Salvage mastectomy was performed for 73 patients and repeat lumpectomy for 16 patients. Another eight patients had nodal ILRR, and one patient had chest wall ILRR. Among 64 patients whose primary surgery was mastectomy, 52 had chest wall/skin ILRR, and 12 had nodal ILRR. For 15 patients, a second ILRR developed a median of 1.6 years (range 0.08-4.8 years) after ILRR. All second ILRRs occurred for patients with progesterone receptor-negative ILRR. Death occurred for 7 (47 %) of 15 patients with a second ILRR and 19 (51 %) of 37 patients with a distant recurrence. As shown in the multivariable analysis, the significant predictors of survival after either a second ILRR or distant recurrence were chemotherapy for the primary cancer (hazard ratio [HR], 3.55; 95 % confidence interval [CI], 1.15-10.9; p = 0.03) and the interval (continuous) from the primary surgery (HR, 0.87; 95 % CI, 0.75-1.00; p = 0.05).Second ILRRs represented about one third of all recurrence events after ILRR, and all were PR-negative. These second ILRRs and distant metastases portend an unfavorable outcome.
View details for DOI 10.1245/s10434-016-5571-y
View details for Web of Science ID 000391926600014
View details for PubMedID 27663567
View details for PubMedCentralID PMC5215961
Poor prognosis after second locoregional recurrences
Annals of Surgical Oncology
2017; 24 (1)
View details for DOI 10.1245/s10434-016-5571-y
Society of Surgical Oncology-American Society for Radiation Oncology-American Society of Clinical Oncology Consensus Guideline on Margins for Breast-Conserving Surgery With Whole-Breast Irradiation in Ductal Carcinoma In Situ
JOURNAL OF CLINICAL ONCOLOGY
2016; 34 (33): 4040-U166
Controversy exists regarding the optimal negative margin width for ductal carcinoma in situ (DCIS) treated with breast-conserving surgery and whole-breast irradiation (WBRT).A multidisciplinary consensus panel used a meta-analysis of margin width and ipsilateral breast tumor recurrence (IBTR) from a systematic review of 20 studies including 7883 patients and other published literature as the evidence base for consensus.Negative margins halve the risk of IBTR compared with positive margins defined as ink on DCIS. A 2 mm margin minimizes the risk of IBTR compared with smaller negative margins. More widely clear margins do not significantly decrease IBTR compared with 2 mm margins. Negative margins less than 2 mm alone are not an indication for mastectomy, and factors known to impact rates of IBTR should be considered in determining the need for re-excision.The use of a 2 mm margin as the standard for an adequate margin in DCIS treated with WBRT is associated with low rates of IBTR and has the potential to decrease re-excision rates, improve cosmetic outcome, and decrease health care costs. Clinical judgment should be used in determining the need for further surgery in patients with negative margins < 2 mm.
View details for DOI 10.1200/JCO.2016.68.3573
View details for Web of Science ID 000388927700014
View details for PubMedID 27528719
Society of Surgical Oncology-American Society for Radiation Oncology-American Society of Clinical Oncology Consensus Guideline on Margins for Breast-Conserving Surgery with Whole-Breast Irradiation in Ductal Carcinoma In Situ
ANNALS OF SURGICAL ONCOLOGY
2016; 23 (12): 3801-3810
Controversy exists regarding the optimal negative margin width for ductal carcinoma in situ (DCIS) treated with breast-conserving surgery and whole-breast irradiation.A multidisciplinary consensus panel used a meta-analysis of margin width and ipsilateral breast tumor recurrence (IBTR) from a systematic review of 20 studies including 7,883 patients and other published literature as the evidence base for consensus.Negative margins halve the risk of IBTR compared with positive margins defined as ink on DCIS. A 2-mm margin minimizes the risk of IBTR compared with smaller negative margins. More widely clear margins do not significantly decrease IBTR compared with 2-mm margins. Negative margins narrower than 2 mm alone are not an indication for mastectomy, and factors known to affect rates of IBTR should be considered in determining the need for re-excision.Use of a 2-mm margin as the standard for an adequate margin in DCIS treated with whole-breast irradiation is associated with lower rates of IBTR and has the potential to decrease re-excision rates, improve cosmetic outcomes, and decrease health care costs. Clinical judgment should be used in determining the need for further surgery in patients with negative margins narrower than 2 mm.
View details for DOI 10.1245/s10434-016-5449-z
View details for Web of Science ID 000385155900007
View details for PubMedID 27527714
Clinical Utility of the 12-Gene DCIS Score Assay: Impact on Radiotherapy Recommendations for Patients with Ductal Carcinoma In Situ.
Annals of surgical oncology
The aim of this study was to determine the impact of the results of the 12-gene DCIS Score assay on (i) radiotherapy recommendations for patients with pure ductal carcinoma in situ (DCIS) following breast-conserving surgery (BCS), and (ii) patient decisional conflict and state anxiety.Thirteen sites across the US enrolled patients (March 2014-August 2015) with pure DCIS undergoing BCS. Prospectively collected data included clinicopathologic factors, physician estimates of local recurrence risk, DCIS Score results, and pre-/post-assay radiotherapy recommendations for each patient made by a surgeon and a radiation oncologist. Patients completed pre-/post-assay decisional conflict scale and state-trait anxiety inventory instruments.The analysis cohort included 127 patients: median age 60 years, 80 % postmenopausal, median size 8 mm (39 % ≤5 mm), 70 % grade 1/2, 88 % estrogen receptor-positive, 75 % progesterone receptor-positive, 54 % with comedo necrosis, and 18 % multifocal. Sixty-six percent of patients had low DCIS Score results, 20 % had intermediate DCIS Score results, and 14 % had high DCIS Score results; the median result was 21 (range 0-84). Pre-assay, surgeons and radiation oncologists recommended radiotherapy for 70.9 and 72.4 % of patients, respectively. Post-assay, 26.4 % of overall recommendations changed, including 30.7 and 22.0 % of recommendations by surgeons and radiation oncologists, respectively. Among patients with confirmed completed questionnaires (n = 32), decision conflict (p = 0.004) and state anxiety (p = 0.042) decreased significantly from pre- to post-assay.Individualized risk estimates from the DCIS Score assay provide valuable information to physicians and patients. Post-assay, in response to DCIS Score results, surgeons changed treatment recommendations more often than radiation oncologists. Further investigation is needed to better understand how such treatment changes may affect clinical outcomes.
View details for PubMedID 27704370
View details for PubMedCentralID PMC5306072
Lymph Node Ratio Analysis After Neoadjuvant Chemotherapy is Prognostic in Hormone Receptor-Positive and Triple-Negative Breast Cancer.
Annals of surgical oncology
2016; 23 (10): 3310-3316
Lymph node ratios (LNR), the proportion of positive lymph nodes over the number excised, both defined as ranges and single ratio values are prognostic of outcome. Little is known of the prognostic value of LNR after neoadjuvant chemotherapy (NAC) according to molecular subtype.From 2003 to 2014, patients who underwent definitive surgery after NAC were identified. LNR was calculated for node-positive patients who received axillary dissection or had at least 6 nodes removed. DFS was calculated using the Kaplan-Meier log rank test for yp N0-3 status, LNR categories (LNRC) ≤0.20 (low), 0.21-0.65 (intermediate), >0.65 (high), and single LNR values.Of 428 NAC recipients, 263 were node negative and 165 (38.6 %) node positive: ypN1 = 97 (58.8 %), ypN2 = 43 (26.1 %), and ypN3 = 25 (15.2 %). Among node-positive cancers, the median number of LN removed was 14 (range, 6-51) and the median LNR was 0.22 (range, 0.03-1.0). Nodal stage was inversely associated with 5-year DFS: 91.5 % (ypN0), 74.5 % (ypN1), 49.8 % (ypN2), and 50.7 % (ypN3) (p < 0.001). LNRC was similarly inversely associated with DFS: 69.1 % (low), 71.4 % (intermediate), 49.3 % (high) (p < 0.001). Significant associations between LNRC and DFS were demonstrated in hormone receptor (HR)-positive and triple negative breast cancer (TNBC) subtypes, p = 0.02 and p = 0.003. A single-value LNR ≤ 0.15 in node-positive, HR-positive (94.1 vs 67.7 %; p = 0.04) and TNBC (94.1 vs 47.8 %; p = 0.001) groups was also significant.Residual nodal disease after NAC, analyzed by LNRC or LNR = 0.15 cutoff value, is prognostic and can discriminate between favorable and unfavorable outcomes for HR-positive and TNBC cancers.
View details for DOI 10.1245/s10434-016-5319-8
View details for PubMedID 27401442
Breast Cancer Survivorship: Why, What and When?
Annals of surgical oncology
2016; 23 (10): 3162-3167
Survivorship medicine is fairly new in the realm of oncology. As we broaden our focus from treatment and prevention to include survivorship there is substantial opportunity to enhance the care of the patient. Important in successful management of recovery after cancer treatment is managing the side effects of therapy and improving quality of life. This ranges from sexual dysfunction, depression to lymphedema. Guideline-based surveillance after treatment with clear communication of care plans to the patient and their providers, especially primary care, is paramount. Thoughtful pre-surgical treatment planning, which may include neoadjuvant approaches or consideration of fertility preservation, results in superior long-term patient outcomes. Understanding the importance of the teachable moment in effecting behavioral and lifestyle changes that reduce risk of recurrence is also an essential component of excellent cancer survivor patient care. We identified the following areas for focus as they represent the key areas for accreditation and patient driven needs. Development of survivorship plans, post treatment surveillance, sexuality and fertility preservation, lymphedema management and risk reduction lifestyle and behavioral changes.
View details for DOI 10.1245/s10434-016-5403-0
View details for PubMedID 27431417
Society of Surgical Oncology-American Society for Radiation Oncology-American Society of Clinical Oncology Consensus Guideline on Margins for Breast-Conserving Surgery With Whole-Breast Irradiation in Ductal Carcinoma in Situ.
Practical radiation oncology
2016; 6 (5): 287-295
Controversy exists regarding the optimal negative margin width for ductal carcinoma in situ (DCIS) treated with breast-conserving surgery and whole-breast irradiation.A multidisciplinary consensus panel used a meta-analysis of margin width and ipsilateral breast tumor recurrence (IBTR) from a systematic review of 20 studies including 7883 patients and other published literature as the evidence base for consensus.Negative margins halve the risk of IBTR compared with positive margins defined as ink on DCIS. A 2-mm margin minimizes the risk of IBTR compared with smaller negative margins. More widely clear margins do not significantly decrease IBTR compared with 2-mm margins. Negative margins narrower than 2 mm alone are not an indication for mastectomy, and factors known to affect rates of IBTR should be considered in determining the need for re-excision.Use of a 2-mm margin as the standard for an adequate margin in DCIS treated with whole-breast irradiation is associated with lower rates of IBTR and has the potential to decrease re-excision rates, improve cosmetic outcomes, and decrease health care costs. Clinical judgment should be used in determining the need for further surgery in patients with negative margins narrower than 2 mm.
View details for DOI 10.1016/j.prro.2016.06.011
View details for PubMedID 27538810
- Regression of experimental NIS-expressing breast cancer brain metastases in response to radioiodide/gemcitabine dual therapy ONCOTARGET 2016; 7 (34): 54811-54824
Protecting Nipple Perfusion by Devascularization and Surgical Delay in Patients at Risk for Ischemic Complications During Nipple-Sparing Mastectomies
ANNALS OF SURGICAL ONCOLOGY
2016; 23 (8): 2665-2672
Indications for nipple-sparing mastectomy (NSM) are expanding; however, high-risk patients have more ischemic complications. Surgical devascularization of the nipple-areolar complex (NAC) prior to NSM can reduce complications. This study reports perfusion patterns and complications in high-risk patients undergoing 2-stage NSM.Surgical devascularization of the NAC was performed 3-6 weeks prior to NSM in 28 women. Risk factors included ptosis, obesity, smoking, prior breast surgery, and radiation. Using indocyanine green (ICG)-based fluorescence and an infrared camera, blood inflow was visualized intraoperatively. NAC perfusion patterns were classified as: V1, underlying breast; V2, surrounding skin; V3 = V1 + V2, or V4, capillary fill following devascularization. Ischemic complications were analyzed.Baseline perfusion for 54 breasts was 35 % V1, 32 % V2, and 33 % V3. Increasing ptosis was associated with V1 pattern: 86 % for grade 3, 31 % for grade 2, and 18 % for grade 1. Postdevascularization epidermolysis was observed in 63 % of V1 baseline, 41 % of V2, and 22 % of V3 (P = .042) and after NSM in 26 % for V1, 7 % for V2, and 6 % for V3 (P = .131). Ptosis was significantly associated with epidermolysis postdevascularization (P = .002) and NSM (P = .002). Smoking and BMI ≥30 were related to increased ischemic complications. Two or more risk factors were associated with postdevascularization ischemic changes (P = .026), but were not significant after NSM. Nipple loss was not observed, but 2 patients underwent partial areolar resection.Adaptive circulatory changes after devascularization allow tissues to tolerate the additional ischemic challenge of mastectomy. Our findings support extending 2-staged operations to high-risk women previously considered unsuitable for NSM.
View details for DOI 10.1245/s10434-016-5201-8
View details for Web of Science ID 000379189900044
View details for PubMedID 27038458
Addressing Inherited Predisposition for Breast Cancer in Transplant Recipients
JOURNAL OF SURGICAL ONCOLOGY
2016; 113 (6): 605-608
Consideration of prophylactic mastectomy surgery following transplantation requires complex medical decision-making, and bias against elective surgery exists because of concern for post-operative complications. Prevention of cancer in transplant recipients is of utmost importance, given the risks of treating malignancy in an immunosuppressed patient. We present a patient case and review of the literature to support a thorough pre-transplantation evaluation of family history and consideration of prophylactic interventions to safeguard the quality of life of transplant recipients. J. Surg. Oncol. © 2016 Wiley Periodicals, Inc.
View details for DOI 10.1002/jso.24193
View details for Web of Science ID 000377391900002
View details for PubMedID 26861253
- Rising bilateral mastectomy rates among neoadjuvant chemotherapy recipients in California, 1998-2012 Annals of Surgery 2016
- rising bilateral mastectomy rates among neoadjuvant chemotherapy recipients in California, 1998-2012 Annals of Surgery 2016
Regression of experimental NIS-expressing breast cancer brain metastases in response to radioiodide/gemcitabine dual therapy.
Treating breast cancer brain metastases (BCBMs) is challenging. Na+/I- symporter (NIS) expression in BCBMs would permit their selective targeting with radioiodide (131I-). We show impressive enhancement of tumor response by combining131I- with gemcitabine (GEM), a cytotoxic radiosensitizer. Nude mice mammary fat-pad (MFP) tumors and BCBMs were generated with braintropic MDA-MB-231Br cells transduced with bicistronically-linked NIS and firefly luciferase cDNAs. Response was monitored in vivo via bioluminescent imaging and NIS tumor expression.131I-/GEM therapy inhibited MFP tumor growth more effectively than either agent alone. BCBMs were treated with: high or low-dose GEM (58 or 14.5 mg/Kg×4); 131I- (1mCi or 2×0.5 mCi 7 days apart); and 131I-/GEM therapy. By post-injection day (PID) 25, 82-86% of controls and 78-83% of 131I--treated BCBM grew, whereas 17% low-dose and 36% high-dose GEM regressed. The latter tumors were smaller than the controls with comparable NIS expression (~20% of cells). High and low-dose 131I-/ GEM combinations caused 89% and 57% tumor regression, respectively. High-dose GEM/131I- delayed tumor growth: tumors increased 5-fold in size by PID45 (controls by PID18). Although fewer than 25% of cells expressed NIS, GEM/131I- caused dramatic tumor regression in NIS-transduced BCBMs. This effect was synergistic, and supports the hypothesis that GEM radiosensitizes cells to 131I-.
View details for DOI 10.18632/oncotarget.10238
View details for PubMedID 27363025
Using intraoperative laser angiography to safeguard nipple perfusion in nipple-sparing mastectomies.
2015; 4 (6): 497-505
The superior aesthetic outcomes of nipple-sparing mastectomies (NSM) explain their increased use and rising popularity. Fortunately, cancer recurrences involving the nipple-areolar complex (NAC) have been reassuringly low in the range of 1%. Technical considerations and challenges of this procedure are centered on nipple ischemia and necrosis. Patient selection, reconstructive strategies and incision placement have lowered ischemic complications. In this context, rates of full NAC necrosis are 3% or less. The emergence of noninvasive tissue angiography provides surgeons with a practical tool to assess real-time breast skin and NAC perfusion. Herein, we review our classification system of NAC perfusion patterns defined as V1 (from subjacent breast), V2 (surrounding skin), and V3 (combination of V1 + V2). Additionally, we describe the benefits of a first stage operation to devascularize the NAC as a means of improving blood flow to the NAC in preparation for NSM, helping extend the use of NSM to more women. Intraoperative evaluation of skin perfusion allows surgeons to detect ischemia and modify the operative approach to optimize outcomes.
View details for DOI 10.3978/j.issn.2227-684X.2015.04.15
View details for PubMedID 26645004
Phase II Study of Gemcitabine, Carboplatin, and Iniparib As Neoadjuvant Therapy for Triple-Negative and BRCA1/2 Mutation-Associated Breast Cancer With Assessment of a Tumor-Based Measure of Genomic Instability: PrECOG 0105.
Journal of clinical oncology
2015; 33 (17): 1895-1901
This study was designed to assess efficacy, safety, and predictors of response to iniparib in combination with gemcitabine and carboplatin in early-stage triple-negative and BRCA1/2 mutation-associated breast cancer.This single-arm phase II study enrolled patients with stage I to IIIA (T ≥ 1 cm) estrogen receptor-negative (≤ 5%), progesterone receptor-negative (≤ 5%), and human epidermal growth factor receptor 2-negative or BRCA1/2 mutation-associated breast cancer. Neoadjuvant gemcitabine (1,000 mg/m(2) intravenously [IV] on days 1 and 8), carboplatin (area under curve of 2 IV on days 1 and 8), and iniparib (5.6 mg/kg IV on days 1, 4, 8, and 11) were administered every 21 days for four cycles, until the protocol was amended to six cycles. The primary end point was pathologic complete response (no invasive carcinoma in breast or axilla). All patients underwent comprehensive BRCA1/2 genotyping, and homologous recombination deficiency was assessed by loss of heterozygosity (HRD-LOH) in pretreatment core breast biopsies.Among 80 patients, median age was 48 years; 19 patients (24%) had germline BRCA1 or BRCA2 mutations; clinical stage was I (13%), IIA (36%), IIB (36%), and IIIA (15%). Overall pathologic complete response rate in the intent-to-treat population (n = 80) was 36% (90% CI, 27 to 46). Mean HRD-LOH scores were higher in responders compared with nonresponders (P = .02) and remained significant when BRCA1/2 germline mutations carriers were excluded (P = .021).Preoperative combination of gemcitabine, carboplatin, and iniparib is active in the treatment of early-stage triple-negative and BRCA1/2 mutation-associated breast cancer. The HRD-LOH assay was able to identify patients with sporadic triple-negative breast cancer lacking a BRCA1/2 mutation, but with an elevated HRD-LOH score, who achieved a favorable pathologic response. Confirmatory controlled trials are warranted.
View details for DOI 10.1200/JCO.2014.57.0085
View details for PubMedID 25847929
- Phase II Study of Gemcitabine, Carboplatin, and Iniparib As Neoadjuvant Therapy for Triple-Negative and BRCA1/2 Mutation-Associated Breast Cancer With Assessment of a Tumor-Based Measure of Genomic Instability: PrECOG 0105 JOURNAL OF CLINICAL ONCOLOGY 2015; 33 (17): 1895-U57
Initial results with preoperative tattooing of biopsied axillary lymph nodes and correlation to sentinel lymph nodes in breast cancer patients.
Annals of surgical oncology
2015; 22 (2): 377-382
Pretreatment evaluation of axillary lymph nodes (ALNs) and marking of biopsied nodes in patients with newly diagnosed breast cancer is becoming routine practice. We sought to test tattooing of biopsied ALNs with a sterile black carbon suspension (Spot™). The intraoperative success of identifying tattooed ALNs and their concordance to sentinel nodes was determined.Women with suspicious ALNs and newly diagnosed breast cancer underwent palpation and/or ultrasound-guided fine needle aspiration or core needle biopsy, followed by injection of 0.1 to 0.5 ml of Spot™ ink into the cortex of ALNs and adjacent soft tissue. Group I underwent surgery first, and group II underwent neoadjuvant therapy followed by surgery. Identification of black pigment and concordance between sentinel and tattooed nodes was evaluated.Twenty-eight patients were tattooed, 16 in group I and 12 in group II. Seventeen cases had evidence of atypia or metastases, 8 (50 %) in group I and 9 (75 %) in group II. Average number of days from tattooing to surgery was 22.9 (group I) and 130 (group II). Black tattoo ink was visualized intraoperatively in all cases, except one case with microscopic black pigment only. Fourteen group I and 10 group II patients had black pigment on histological examination of ALNs. Sentinel nodes corresponded to tattooed nodes in all except one group I patient with a tattooed non-sentinel node.Tattooed nodes are visible intraoperatively, even months later. This approach obviates the need for additional localization procedures during axillary staging.
View details for DOI 10.1245/s10434-014-4034-6
View details for PubMedID 25164040
- Impact of histological subtype on long-term outcomes of neuroendocrine carcinoma of the breast BREAST CANCER RESEARCH AND TREATMENT 2014; 148 (3): 637-644
Indocyanine green and fluorescence lymphangiography for sentinel lymph node identification in cutaneous melanoma.
Journal of surgical oncology
2014; 110 (7): 888-892
Sentinel lymph node (SLN) biopsy has become the standard method of determining regional lymph node involvement in cutaneous melanoma. Although traditionally performed via injection of radioisotope tracers and blue dyes, fluorescent lymphangiography with indocyanine green (ICG) is an attractive alternative.Fifty two consecutive patients with cutaneous melanoma of the trunk or extremities underwent SLNB. Preoperative lymphoscintigraphy was performed with technetium-99m sulfur colloid (TSC). Peritumoral intradermal injection of isosulfan blue (ISB) and ICG was then performed. Successful identification of a sentinel lymph node via each modality was then assessed.A total of 77 lymph nodes were identified from the 52 patients (range 1-3). The majority of melanomas were extremity-based, superficial spreading type, and had SLN localized to the axilla. There were no complications related to IcG administration. Rates of SLN detection were 96.2% for TSC, 59.6% for ISB, and 88.5% for IcG (P < 0.05 for ICG vs ISB). On univariate logistic regression analysis, no factors were found to be associated with failure of ICG.Fluorescent lymphangiography using ICG is an effective method of SLN identification in patients with cutaneous melanoma of the trunk and extremities. When ICG and TSC are used in combination, ISB offers no additional advantage and may be safely omitted. J. Surg. Oncol. © 2014 Wiley Periodicals, Inc.
View details for DOI 10.1002/jso.23745
View details for PubMedID 25124992
Maastricht Delphi Consensus on Event Definitions for Classification of Recurrence in Breast Cancer Research
JNCI-JOURNAL OF THE NATIONAL CANCER INSTITUTE
2014; 106 (12)
In breast cancer studies, many different endpoints are used. Definitions are often not provided or vary between studies. For instance, "local recurrence" may include different components in similar studies. This limits transparency and comparability of results. This project aimed to reach consensus on the definitions of local event, second primary breast cancer, regional and distant event for breast cancer studies.The RAND-UCLA Appropriateness method (modified Delphi method) was used. A Consensus Group of international breast cancer experts was formed, including representatives of all involved clinical disciplines. Consensus was reached in two rounds of online questionnaires and one meeting.Twenty-four international breast cancer experts participated. Consensus was reached on 134 items in four categories. Local event is defined as any epithelial breast cancer or ductal carcinoma in situ (DCIS) in the ipsilateral breast, or skin and subcutaneous tissue on the ipsilateral thoracic wall. Second primary breast cancer is defined as epithelial breast cancer in the contralateral breast. Regional events are breast cancer in ipsilateral lymph nodes. A distant event is breast cancer in any other location. Therefore, this includes metastasis in contralateral lymph nodes and breast cancer involving the sternal bone. If feasible, tissue sampling of a first, solitary, lesion suspected for metastasis is highly recommended.This project resulted in consensus-based event definitions for classification of recurrence in breast cancer research. Future breast cancer research projects should adopt these definitions to increase transparency. This should facilitate comparison of results and conducting reviews as well as meta-analysis.
View details for DOI 10.1093/jnci/dju288
View details for Web of Science ID 000348593200017
View details for PubMedID 25381395
- Indocyanine Green and Fluorescence Lymphangiography for Sentinel Lymph Node Identification in Cutaneous Melanoma JOURNAL OF SURGICAL ONCOLOGY 2014; 110 (7): 888-892
- PREDICT: Instituting an Educational Time Out in the Operating Room. Journal of graduate medical education 2014; 6 (2): 382-383
Ex vivo Evans blue assessment of the blood brain barrier in three breast cancer brain metastasis models.
Breast cancer research and treatment
2014; 144 (1): 93-101
The limited entry of anticancer drugs into the central nervous system represents a special therapeutic challenge for patients with brain metastases and is primarily due to the blood brain barrier (BBB). Albumin-bound Evans blue (EB) dye is too large to cross the BBB but can grossly stain tissue blue when the BBB is disrupted. The course of tumor development and the integrity of the BBB were studied in three preclinical breast cancer brain metastasis (BCBM) models. A luciferase-transduced braintropic clone of MDA-231 cell line was used. Nude mice were subjected to stereotactic intracerebral inoculation, mammary fat pad-derived tumor fragment implantation, or carotid artery injections. EB was injected 30 min prior to euthanasia at various timepoints for each of the BCBM model animals. Serial bioluminescent imaging demonstrated exponential tumor growth in all models. Carotid BCBM appeared as diffuse multifocal cell clusters. EB aided the localization of metastases ex vivo. Tumor implants stained blue at 7 days whereas gross staining was not evident until day 14 in the stereotactic model and day 28 for the carotid model. EB assessment of the integrity of the BBB provides useful information relevant to drug testing in preclinical BCBM models.
View details for DOI 10.1007/s10549-014-2854-5
View details for PubMedID 24510011
View details for PubMedCentralID PMC4363122
Chemotherapy for isolated locoregional recurrence of breast cancer (CALOR): a randomised trial
2014; 15 (2): 156-163
Patients with isolated locoregional recurrences (ILRR) of breast cancer have a high risk of distant metastasis and death from breast cancer. We aimed to establish whether adjuvant chemotherapy improves the outcome of such patients.The CALOR trial was a pragmatic, open-label, randomised trial that accrued patients with histologically proven and completely excised ILRR after unilateral breast cancer who had undergone a mastectomy or lumpectomy with clear surgical margins. Eligible patients were enrolled from hospitals worldwide and were centrally randomised (1:1) to chemotherapy (type selected by the investigator; multidrug for at least four courses recommended) or no chemotherapy, using permuted blocks, and stratified by previous chemotherapy, oestrogen-receptor and progesterone-receptor status, and location of ILRR. Patients with oestrogen-receptor-positive ILRR received adjuvant endocrine therapy, radiation therapy was mandated for patients with microscopically involved surgical margins, and anti-HER2 therapy was optional. The primary endpoint was disease-free survival. All analyses were by intention to treat. This study is registered with ClinicalTrials.gov, number NCT00074152.From Aug 22, 2003, to Jan 31, 2010, 85 patients were randomly assigned to receive chemotherapy and 77 were assigned to no chemotherapy. At a median follow-up of 4·9 years (IQR 3·6-6 ·0), 24 (28%) patients had disease-free survival events in the chemotherapy group compared with 34 (44%) in the no chemotherapy group. 5-year disease-free survival was 69% (95% CI 56-79) with chemotherapy versus 57% (44-67) without chemotherapy (hazard ratio 0·59 [95% CI 0·35-0·99]; p=0·046). Adjuvant chemotherapy was significantly more effective for women with oestrogen-receptor-negative ILRR (pinteraction=0·046), but analyses of disease-free survival according to the oestrogen-receptor status of the primary tumour were not statistically significant (pinteraction=0·43). Of the 81 patients who received chemotherapy, 12 (15%) had serious adverse events. The most common adverse events were neutropenia, febrile neutropenia, and intestinal infection.Adjuvant chemotherapy should be recommended for patients with completely resected ILRR of breast cancer, especially if the recurrence is oestrogen-receptor negative.US Department of Health and Human Services, Swiss Group for Clinical Cancer Research (SAKK), Frontier Science and Technology Research Foundation, Australian and New Zealand Breast Cancer Trials Group, Swedish Cancer Society, Oncosuisse, Cancer Association of South Africa, Foundation for Clinical Research of Eastern Switzerland (OSKK), Grupo Español de Investigación en Cáncer de Mama (GEICAM), and the Dutch Breast Cancer Trialists' Group (BOOG).
View details for DOI 10.1016/S1470-2045(13)70589-8
View details for Web of Science ID 000330228700028
View details for PubMedID 24439313
Intraoperative imaging of nipple perfusion patterns and ischemic complications in nipple-sparing mastectomies.
Annals of surgical oncology
2014; 21 (1): 100-106
Nipple-sparing mastectomies (NSM) have gained acceptance in the field of breast oncology. Ischemic complications involving the nipple-areolar complex (NAC) occur in 3-37 % of cases. Skin perfusion can be monitored intraoperatively using indocyanine green (IC-GREEN™, ICG) and a specialized infrared camera-computer system (SPY Elite™). The blood flow pattern to the breast skin and the NAC were evaluated and a classification scheme was developed.Preincision baseline and postmastectomy skin perfusion studies were performed intraoperatively using 3 mL of ICG. The pattern of arterial blood inflow was classified according to whether perfusion appeared to originate predominantly from the underlying breast tissue (V1), the surrounding skin (V2), or a combination of V1 and V2 (V3). Ischemia, resection, or delayed complications of NAC were recorded.Thirty-nine breasts were interrogated. Seven (18 %) demonstrated a V1 pattern, 18 (46 %) a V2 pattern, and 14 (36 %) a V3 pattern. Seven (18 %) NACs were removed; six intraoperatively and the seventh in a delayed fashion. Notably, five of the seven resected NACs had a V1 pattern. Overall, 71 % of all V1 cases demonstrated profound ischemic changes by intraoperative clinical judgment and SPY imaging. The rates of resection of the NAC differed significantly between perfusion patterns (Fisher's exact test, p = 0.0003).Three perfusion patterns for the NAC are defined. The V1 pattern had the highest rate of NAC ischemia in NSM. Imaging NAC and skin perfusion during NSMs is a useful adjunctive tool with potential to direct placement of mastectomy incisions and minimize ischemic complications.
View details for DOI 10.1245/s10434-013-3214-0
View details for PubMedID 24046104
Patient-derived xenografts of triple-negative breast cancer reproduce molecular features of patient tumors and respond to mTOR inhibition.
Breast cancer research
2014; 16 (2): R36-?
Triple-negative breast cancer (TNBC) is aggressive and lacks targeted therapies. Phosphatidylinositide 3-kinase (PI3K) / mammalian target of rapamycin (mTOR) pathways are frequently activated in TNBC patient tumors at the genome, gene expression and protein levels, and mTOR inhibitors have been shown to inhibit growth in TNBC cell lines. We describe a panel of patient-derived xenografts representing multiple TNBC subtypes and use them to test preclinical drug efficacy of two mTOR inhibitors, sirolimus (rapamycin) and temsirolimus (CCI-779).We generated a panel of seven patient-derived orthotopic xenografts from six primary TNBC tumors and one metastasis. Patient tumors and corresponding xenografts were compared by histology, immunohistochemistry, array comparative genomic hybridization (aCGH) and phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha (PIK3CA) sequencing; TNBC subtypes were determined. Using a previously published logistic regression approach, we generated a rapamycin response signature from Connectivity Map gene expression data and used it to predict rapamycin sensitivity in 1401 human breast cancers of different intrinsic subtypes, prompting in vivo testing of mTOR inhibitors and doxorubicin in our TNBC xenografts.Patient-derived xenografts recapitulated histology, biomarker expression and global genomic features of patient tumors. Two primary tumors had PIK3CA coding mutations, and 5/6 primary tumors showed flanking intron single nucleotide polymorphisms (SNPs) with conservation of sequence variations between primary tumors and xenografts, even on subsequent xenograft passages. Gene expression profiling showed that our models represent at least four of six TNBC subtypes. The rapamycin response signature predicted sensitivity for 94% of basal-like breast cancers in a large dataset. Drug testing of mTOR inhibitors in our xenografts showed 77 to 99% growth inhibition, significantly more than doxorubicin; protein phosphorylation studies indicated constitutive activation of the mTOR pathway that decreased with treatment. However, no tumor was completely eradicated.A panel of patient-derived xenograft models covering a spectrum of TNBC subtypes was generated that histologically and genomically matched original patient tumors. Consistent with in silico predictions, mTOR inhibitor testing in our TNBC xenografts showed significant tumor growth inhibition in all, suggesting that mTOR inhibitors can be effective in TNBC, but will require use with additional therapies, warranting investigation of optimal drug combinations.
View details for DOI 10.1186/bcr3640
View details for PubMedID 24708766
- Patient-derived xenografts of triple-negative breast cancer reproduce molecular features of patient tumors and respond to mTOR inhibition BREAST CANCER RESEARCH 2014; 16 (2)
Outcomes of Partial Mastectomy in Male Breast Cancer Patients: Analysis of SEER, 1983-2009
ANNALS OF SURGICAL ONCOLOGY
2013; 20 (5): 1545-1550
Although mastectomy is considered the gold standard for male breast cancer (MBC), the utilization of lumpectomy and its impact on outcomes in MBC patients has not been previously studied.The Surveillance, Epidemiology and End Results (SEER) database was used to identify all MBC patients who underwent either mastectomy or less than mastectomy (i.e., lumpectomy) between 1983 and 2009.A total of 4707 (86.8 %) men underwent mastectomy and 718 (13.2 %) underwent lumpectomy. A greater proportion of patients underwent lumpectomy later in the study period (1983 to 1986, 10.6 %, vs. 2007 to 2009, 15.1 %). A greater percentage of lumpectomy patients were 80 years or older (21.3 % vs. 16.3 %), had stage IV disease (7.3 % vs. 3.1 %), and received no lymph node sampling (34.3 % vs. 6.9 %). Only 35.4 % of patients underwent adjuvant radiotherapy after lumpectomy. Ten-year breast cancer-specific survival and overall survival were 82.8 % and 46.9 %, respectively, in lumpectomy patients vs. 77.3 % and 46.4 %, respectively, in mastectomy patients. On Cox proportional hazards regression, lumpectomy was not independently associated with worse breast cancer-specific survival (odds ratio 1.09, 95 % confidence interval 0.87-1.37) or overall survival (odds ratio 1.12, 95 % confidence interval 0.98-1.27) after controlling for age, race, stage, and grade, as well as whether radiotherapy was received.Lumpectomy is performed in a small but growing proportion of MBC patients. These patients are not only older and more likely to have advanced disease at the time of diagnosis, but they also are less likely to receive standard of care therapy, such as lymph node sampling and adjuvant radiotherapy. Despite these observations, breast cancer-specific survival is unaffected by the type of surgery.
View details for DOI 10.1245/s10434-013-2918-5
View details for Web of Science ID 000317308200021
View details for PubMedID 23460016
Poor compliance with breast cancer treatment guidelines in men undergoing breast-conserving surgery.
Breast cancer research and treatment
2013; 139 (1): 177-182
Lumpectomy is performed in a small but growing proportion of men with breast cancer. It is unknown whether men undergoing breast-conserving surgery (BCS) receive care compliant with breast cancer treatment guidelines. Patients with breast cancer in the surveillance, epidemiology, and end results (SEER) database who underwent lumpectomy between 1983 and 2009 were identified. Gender differences in the receipt of lymph node staging and adjuvant radiation therapy were assessed. Multivariate logistic regression was utilized to evaluate the independent association of gender on these outcomes. The influence of gender on breast cancer-specific survival (BCSS) was analyzed. 382,030 of 824,408 (46.3 %) women compared to 712 of 6,039 (11.8 %) men with breast cancer underwent lumpectomy. Men were older, more likely to be black, less likely to have stage I disease and more likely to have stage IV disease. Only 59.2 % of men had lymph nodes sampled at the time of surgery compared to 81.6 % of women (p < 0.0001). In addition, only 35.4 % of men received adjuvant breast radiation therapy compared to 69.8 % of women (p < 0.0001). After controlling for age, race, stage, grade, and year of diagnosis, female gender was significantly associated with receiving adjuvant radiation therapy (OR 2.9, 95 % CI 2.4-3.4) and lymph node staging (OR 1.6, 95 % CI 1.3-1.90). Five- and ten-year BCSS were 88.0 and 83.5 % for men compared to 93.2 and 88.2 % for women (p < 0.001). Men with breast cancer are less likely to receive lymph node staging or adjuvant radiation therapy following BCS compared to women.
View details for DOI 10.1007/s10549-013-2517-y
View details for PubMedID 23572298
The Fate of DCIS After Neoadjuvant Treatment for Invasive Breast Cancer
14th Annual Meeting of the American-Society-of-Breast-Surgeons
SPRINGER. 2013: 94–95
View details for Web of Science ID 000318174800123
The diagnostic value of nipple discharge cytology: Breast imaging complements predictive value of nipple discharge cytology
JOURNAL OF SURGICAL ONCOLOGY
2012; 106 (4): 381-385
Papilloma is the most common finding associated with pathologic nipple discharge. In the absence of breast imaging abnormalities, the incidence of occult malignancy is <3%.To determine the predictive value of nipple discharge cytology in conjunction with breast imaging.Retrospective review of 160 charts; inclusion criteria of clinically pathologic nipple discharge, subsequent excisional biopsy, and absence of palpable abnormalities. Nipple discharge cytology categorized as negative, atypical, suspicious, and papillary. Breast imaging was analyzed. Preoperative tests were correlated to final surgical pathology.89 patients identified. Sixty-five had positive cytology, with a false positive rate of 32.3%. They were associated with papillomas in 52%, benign non-papillary in 33% and malignant lesions in 9% of cases. Nipple discharge cytology was positive in 69.6% of papillomas and 92% of atypical/malignant lesions; 30% had abnormal breast imaging and positive cytology. Nipple discharge cytology had a sensitivity of 74.5%, specificity of 30%, and positive predictive value of 68%. The positive predictive value increased to 85% with associated abnormal breast imaging.Nipple discharge cytology is useful in evaluating pathologic discharge. However, negative cytology with negative imaging is not enough to avoid surgery in cases of suspicious clinical presentation.
View details for DOI 10.1002/jso.23091
View details for Web of Science ID 000307550900005
View details for PubMedID 22396104
- MRI Enhancement Correlates With High Grade Desmoid Tumor of Breast BREAST JOURNAL 2012; 18 (4): 374-376
Integration and safety of fertility preservation in a breast cancer program
2012; 124 (3): 474-476
Young women diagnosed with breast cancer typically face systemic treatments that may delay childbearing or permanently impair their fertility. These concerns add to the stress experienced by young cancer survivors. Timely counseling and providing fertility preservation through cryopreservation of eggs or embryos have become an important quality of life issue. We analyzed the impact of fertility preservation procedures on the initiation of treatment for breast cancer and discuss critical aspects of the process.
View details for DOI 10.1016/j.ygyno.2011.11.028
View details for Web of Science ID 000300751900018
View details for PubMedID 22173210
Determining Adequate Nipple Areolar Complex Perfusion in Breast Cancer Related Mastectomies
65th Annual Cancer Symposium of the Society-of-Surgical-Oncology (SSO)
SPRINGER. 2012: S91–S91
View details for Web of Science ID 000310202700253
Long-Term Outcomes of Invasive Ipsilateral Breast Tumor Recurrences After Lumpectomy in NSABP B-17 and B-24 Randomized Clinical Trials for DCIS
JOURNAL OF THE NATIONAL CANCER INSTITUTE
2011; 103 (6): 478-488
Ipsilateral breast tumor recurrence (IBTR) is the most common failure event after lumpectomy for ductal carcinoma in situ (DCIS). We evaluated invasive IBTR (I-IBTR) and its influence on survival among participants in two National Surgical Adjuvant Breast and Bowel Project (NSABP) randomized trials for DCIS.In the NSABP B-17 trial (accrual period: October 1, 1985, to December 31, 1990), patients with localized DCIS were randomly assigned to the lumpectomy only (LO, n = 403) group or to the lumpectomy followed by radiotherapy (LRT, n = 410) group. In the NSABP B-24 double-blinded, placebo-controlled trial (accrual period: May 9, 1991, to April 13, 1994), all accrued patients were randomly assigned to LRT+ placebo, (n=900) or LRT + tamoxifen (LRT + TAM, n = 899). Endpoints included I-IBTR, DCIS-IBTR, contralateral breast cancers (CBC), overall and breast cancer-specific survival, and survival after I-IBTR. Median follow-up was 207 months for the B-17 trial (N = 813 patients) and 163 months for the B-24 trial (N = 1799 patients).Of 490 IBTR events, 263 (53.7%) were invasive. Radiation reduced I-IBTR by 52% in the LRT group compared with LO (B-17, hazard ratio [HR] of risk of I-IBTR = 0.48, 95% confidence interval [CI] = 0.33 to 0.69, P < .001). LRT + TAM reduced I-IBTR by 32% compared with LRT + placebo (B-24, HR of risk of I-IBTR = 0.68, 95% CI = 0.49 to 0.95, P = .025). The 15-year cumulative incidence of I-IBTR was 19.4% for LO, 8.9% for LRT (B-17), 10.0% for LRT + placebo (B-24), and 8.5% for LRT + TAM. The 15-year cumulative incidence of all contralateral breast cancers was 10.3% for LO, 10.2% for LRT (B-17), 10.8% for LRT + placebo (B-24), and 7.3% for LRT + TAM. I-IBTR was associated with increased mortality risk (HR of death = 1.75, 95% CI = 1.45 to 2.96, P < .001), whereas recurrence of DCIS was not. Twenty-two of 39 deaths after I-IBTR were attributed to breast cancer. Among all patients (with or without I-IBTR), the 15-year cumulative incidence of breast cancer death was 3.1% for LO, 4.7% for LRT (B-17), 2.7% for LRT + placebo (B-24), and 2.3% for LRT + TAM.Although I-IBTR increased the risk for breast cancer-related death, radiation therapy and tamoxifen reduced I-IBTR, and long-term prognosis remained excellent after breast-conserving surgery for DCIS.
View details for DOI 10.1093/jnci/djr027
View details for Web of Science ID 000288554900008
View details for PubMedID 21398619
KT5823 Differentially Modulates Sodium Iodide Symporter Expression, Activity, and Glycosylation between Thyroid and Breast Cancer Cells
2011; 152 (3): 782-792
Na(+)/I(-) symporter (NIS)-mediated iodide uptake into thyroid follicular cells serves as the basis of radioiodine therapy for thyroid cancer. NIS protein is also expressed in the majority of breast tumors, raising potential for radionuclide therapy of breast cancer. KT5823, a staurosporine-related protein kinase inhibitor, has been shown to increase thyroid-stimulating hormone-induced NIS expression, and thus iodide uptake, in thyroid cells. In this study, we found that KT5823 does not increase but decreases iodide uptake within 0.5 h of treatment in trans-retinoic acid and hydrocortisone-treated MCF-7 breast cancer cells. Moreover, KT5823 accumulates hypoglycosylated NIS, and this effect is much more evident in breast cancer cells than thyroid cells. The hypoglycosylated NIS is core glycosylated, has not been processed through the Golgi apparatus, but is capable of trafficking to the cell surface. KT5823 impedes complex NIS glycosylation at a regulatory point similar to brefeldin A along the N-linked glycosylation pathway, rather than targeting a specific N-glycosylated site of NIS. KT5823-mediated effects on NIS activity and glycosylation are also observed in other breast cancer cells as well as human embryonic kidney cells expressing exogenous NIS. Taken together, KT5823 will serve as a valuable pharmacological reagent to uncover mechanisms underlying differential NIS regulation between thyroid and breast cancer cells at multiple levels.
View details for DOI 10.1210/en.2010-0782
View details for Web of Science ID 000287520900006
View details for PubMedID 21209020
Eusorbents and Eusorption: A Review of Physiological Events to Therapeutic Concepts
JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION
2011; 30 (1): 1-10
Eusorbents are considered the exogenous substances that facilitate and enhance intestinal absorption. Eusorption is the process by which eusorbents affect the mechanisms of intestinal absorption. These 2 concepts should be distinguished from the well-known probiotics and prebiotics that may also play a role in benefiting the host. This review covers the eusorption paradigm in the optimization of oral rehydration and the treatment of diarrhea. The various factors that influence the validity of eusorbents to facilitate the eusorption were considered (i.e., viscosity, hydrating agents, and minerals such as zinc). The role of surface tension in solute absorption was addressed. The possible effects that eusorbents could play in the gene activation of the intestinal mucosa were also considered. This review should contribute to the understanding of absorptive enhancements of specific substances and their properties that facilitate the desired effects in health and disease.
View details for Web of Science ID 000292663900001
View details for PubMedID 21697533
In Situ Vaccination With a TLR9 Agonist Induces Systemic Lymphoma Regression: A Phase I/II Study
JOURNAL OF CLINICAL ONCOLOGY
2010; 28 (28): 4324-4332
Combining tumor antigens with an immunostimulant can induce the immune system to specifically eliminate cancer cells. Generally, this combination is accomplished in an ex vivo, customized manner. In a preclinical lymphoma model, intratumoral injection of a Toll-like receptor 9 (TLR9) agonist induced systemic antitumor immunity and cured large, disseminated tumors.We treated 15 patients with low-grade B-cell lymphoma using low-dose radiotherapy to a single tumor site and-at that same site-injected the C-G enriched, synthetic oligodeoxynucleotide (also referred to as CpG) TLR9 agonist PF-3512676. Clinical responses were assessed at distant, untreated tumor sites. Immune responses were evaluated by measuring T-cell activation after in vitro restimulation with autologous tumor cells.This in situ vaccination maneuver was well-tolerated with only grade 1 to 2 local or systemic reactions and no treatment-limiting adverse events. One patient had a complete clinical response, three others had partial responses, and two patients had stable but continually regressing disease for periods significantly longer than that achieved with prior therapies. Vaccination induced tumor-reactive memory CD8 T cells. Some patients' tumors were able to induce a suppressive, regulatory phenotype in autologous T cells in vitro; these patients tended to have a shorter time to disease progression. One clinically responding patient received a second course of vaccination after relapse resulting in a second, more rapid clinical response.In situ tumor vaccination with a TLR9 agonist induces systemic antilymphoma clinical responses. This maneuver is clinically feasible and does not require the production of a customized vaccine product.
View details for DOI 10.1200/JCO.2010.28.9793
View details for Web of Science ID 000282272700032
View details for PubMedID 20697067
View details for PubMedCentralID PMC2954133
Breast cancer brain metastases express the sodium iodide symporter
JOURNAL OF NEURO-ONCOLOGY
2010; 96 (3): 331-336
Breast cancer brain metastases are on the rise and their treatment is hampered by the limited entry and efficacy of anticancer drugs in this sanctuary. The sodium iodide symporter, NIS, actively transports iodide across the plasma membrane and is exploited clinically to deliver radioactive iodide into cells. As in thyroid cancers, NIS is expressed in many breast cancers including primary and metastatic tumors. In this study NIS expression was analyzed for the first time in 28 cases of breast cancer brain metastases using a polyclonal anti-NIS antibody directed against the terminal C-peptide of human NIS gene and immunohistochemical methods. Twenty-five tumors (84%) in this retrospective series were estrogen/progesterone receptor-negative and 15 (53.6%) were HER2+. Overall 21 (75%) cases and 80% of HER2 positive metastases were NIS positive. While the predominant pattern of NIS immunoreactivity is intracellular, plasma membrane immunopositivity was detected at least focally in 23.8% of NIS-positive samples. Altogether, these findings indicate that NIS expression is prevalent in breast cancer brain metastases and could have a therapeutic role via the delivery of radioactive iodide and selective ablation of tumor cells.
View details for DOI 10.1007/s11060-009-9971-8
View details for Web of Science ID 000273788700004
View details for PubMedID 19618116
Timing of Breast Cancer Treatments with Oocyte Retrieval and Embryo Cryopreservation
JOURNAL OF THE AMERICAN COLLEGE OF SURGEONS
2009; 209 (5): 603-607
Protecting future childbearing motivates young women with breast cancer to seek oocyte or embryo cryopreservation. Concerns about delays in cancer treatment may influence patients and practitioners considering these procedures. In this study, we compared timing of chemotherapy in women who underwent ovarian stimulation/oocyte retrieval (OR) and embryo cryopreservation with those who did not.Eighty-two women younger than 40 years of age, who received adjuvant chemotherapy for breast cancer, were retrospectively identified. Nineteen underwent OR and 63 did not (CON). The timing of OR, surgery, and chemotherapy were compared with the time intervals between diagnosis and treatments in the CON group.The mean ages of women were 33.7 years (OR group) and 35.2 years (CON group); 84.2% of OR and 25.4% of CON were nulliparous. The median time from initial diagnosis to reproductive endocrinology consultation was 30.1 days (range 4 to 133 days) and from referral to OR was 32 days (range 13 to 66 days). The median times from initial diagnosis to chemotherapy in OR versus CON groups were 71 days (range 45 to 161 days) and 67 days (range 27 to 144 days), respectively, p < 0.27. The median time interval from definitive operation to chemotherapy was similar in the two groups: 30 days (OR; range 14 to 100 days) and 29 days (CON; range 12 to 120 days), p < 0.79.Fertility preservation is an important component of quality of life for young women with breast cancer. The time investment required for OR and cryopreservation is manageable and does not significantly prolong the time interval from diagnosis to start of adjuvant chemotherapy.
View details for DOI 10.1016/j.jamcollsurg.2009.08.006
View details for Web of Science ID 000271876400008
View details for PubMedID 19854400
Prognosis After Ipsilateral Breast Tumor Recurrence and Locoregional Recurrences in Patients Treated by Breast-Conserving Therapy in Five National Surgical Adjuvant Breast and Bowel Project Protocols of Node-Negative Breast Cancer
41st Annual Meeting of the American-Society-of-Clinical-Oncology
AMER SOC CLINICAL ONCOLOGY. 2009: 2466–73
Locoregional failure (LRF) after breast-conserving therapy (BCT) is associated with increased risk of distant disease and death. The magnitude of this risk has not been adequately characterized in patients with lymph node-negative disease.Our study population included 3,799 women randomly assigned to five National Surgical Adjuvant Breast and Bowel Project protocols of node-negative disease (ie, B-13, B-14, B-19, B-20, and B-23) who underwent lumpectomy and whole breast irradiation with or without adjuvant systemic therapy. Cumulative incidences of ipsilateral breast tumor recurrence (IBTR) and other locoregional recurrence (oLRR) were calculated, along with distant-disease-free interval (DDFI) and overall survival (OS) after these events. Cox models were employed to model mortality by using clinical and pathologic factors jointly with these events.Four hundred nineteen patients (11.0%) experienced LRF: 342 (9.0%) experienced IBTR, and 77 (2.0%) experienced oLRR. The 12-year cumulative incidences of IBTR and oLRR in patients treated with adjuvant systemic therapy were 6.6% and 1.8%, respectively. Overall, 37.1% of IBTRs and 72.7% of oLRRs occurred within 5 years of diagnosis. Older age, black race, higher body mass index (BMI), larger tumors, and occurrence of IBTR or oLRR were significantly associated with increased mortality. The 5-year OS after IBTR and oLRR were 76.6% and 34.9%, respectively. Adjusted hazard ratios for mortality associated with IBTR and oLRR were significantly higher in estrogen receptor (ER)-negative patients than in ER-positive patients (P = .002 and P < .0001, respectively). Patients with early LRF had worse OS and DDFI than those with later-occurring LRF.Although LRF is uncommon in patients with node-negative breast cancer who are treated with lumpectomy, radiation, and adjuvant systemic therapy, those who do develop LRF have substantially worse OS and DDFI.
View details for DOI 10.1200/JCO.2008.19.8424
View details for Web of Science ID 000266195400011
View details for PubMedID 19349544
Association of reactive oxygen species levels and radioresistance in cancer stem cells
2009; 458 (7239): 780-U123
The metabolism of oxygen, although central to life, produces reactive oxygen species (ROS) that have been implicated in processes as diverse as cancer, cardiovascular disease and ageing. It has recently been shown that central nervous system stem cells and haematopoietic stem cells and early progenitors contain lower levels of ROS than their more mature progeny, and that these differences are critical for maintaining stem cell function. We proposed that epithelial tissue stem cells and their cancer stem cell (CSC) counterparts may also share this property. Here we show that normal mammary epithelial stem cells contain lower concentrations of ROS than their more mature progeny cells. Notably, subsets of CSCs in some human and murine breast tumours contain lower ROS levels than corresponding non-tumorigenic cells (NTCs). Consistent with ROS being critical mediators of ionizing-radiation-induced cell killing, CSCs in these tumours develop less DNA damage and are preferentially spared after irradiation compared to NTCs. Lower ROS levels in CSCs are associated with increased expression of free radical scavenging systems. Pharmacological depletion of ROS scavengers in CSCs markedly decreases their clonogenicity and results in radiosensitization. These results indicate that, similar to normal tissue stem cells, subsets of CSCs in some tumours contain lower ROS levels and enhanced ROS defences compared to their non-tumorigenic progeny, which may contribute to tumour radioresistance.
View details for DOI 10.1038/nature07733
View details for Web of Science ID 000265193600045
View details for PubMedID 19194462
View details for PubMedCentralID PMC2778612
Endogenous NIS Expression in Triple-Negative Breast Cancers
ANNALS OF SURGICAL ONCOLOGY
2009; 16 (4): 962-968
The sodium iodide symporter (NIS) mediates iodide transport into cells and has been identified in approximately 70% of breast cancers. Functional NIS expression raises the possibility of using (131)I for therapeutic targeting of tumor cells. Treatment of triple-negative breast cancers [estrogen/progesterone receptor-negative and HER2-negative (ER-/PR-/HER2-)] is primarily limited to chemotherapy. Our aim was to characterize NIS expression in this subset of tumors.Archival tissue sections from 23 women with triple-negative breast cancer were analyzed for NIS expression using immunohistochemical methods and an anti-human NIS antibody. Tumors were evaluated for the presence of plasma membrane immunoreactivity. One patient with a NIS-expressing positive tumor underwent (123)I scintigraphic imaging with dosimetric analysis.Fifteen cases (65.2%) demonstrated NIS-positivity with 11 tumors (47.8%) exhibiting strong expression. Plasma membrane immunoreactivity was observed in four breast cancers and was equivocal in another four tumors. Tumor-specific radioiodide uptake was demonstrated by (123)I scintigraphy in a patient with a large primary breast cancer unresponsive to neoadjuvant therapy. The tumor concentrated 2.05, 1.53, and 1.96 times more isotope than normal breast tissue at 1, 5, and 21 h. The relative increased uptake is consistent with positive NIS expression in the tumor on definitive surgery; however, the cumulative concentration in the tumor was not sufficient to achieve a therapeutic effect, had the isotope been (131)I.NIS is strongly expressed in a significant proportion of triple-negative breast cancer cells, suggesting a potential role for NIS-directed (131)I-radioablative strategies in this patient population.
View details for DOI 10.1245/s10434-008-0280-9
View details for Web of Science ID 000263976000026
View details for PubMedID 19184238
Development of a breast cancer brain metastases model to study I-131 radioablative therapy.
31st Annual Meeting of the San Antonio Breast Cancer Symposium
AMER ASSOC CANCER RESEARCH. 2009: 159S–160S
View details for Web of Science ID 000262583200304
Progress on BIG 1-02/IBCSG 27-02/NSABP B-37, a Prospective Randomized Trial Evaluating Chemotherapy after Local Therapy for Isolated Locoregional Recurrences of Breast Cancer
ANNALS OF SURGICAL ONCOLOGY
2008; 15 (11): 3227-3231
The utility of chemotherapy for women who experience a locoregional recurrence after primary treatment of early breast cancer remains an open question. An international collaborative trial is being conducted by the Breast International Group (BIG), the International Breast Cancer Study Group (IBCSG), and the National Surgical Adjuvant Breast and Bowel Project (NSABP) to determine the effectiveness of cytotoxic therapy for these patients, either alone or in addition to selective use of hormonal therapy and trastuzumab.The trial population includes women who have had a previous diagnosis of invasive breast cancer treated by mastectomy or breast-conserving surgery, but subsequently develop an isolated local and/or regional ipsilateral invasive recurrence. Excision of all macroscopic tumor without evidence of systemic disease is required for study entry. Patients are randomized to receive chemotherapy or no chemotherapy; type of chemotherapy is not protocol-specified. Radiation, hormonal therapy, and trastuzumab are given as appropriate. The primary endpoint is disease-free survival (DFS). Quality-of-life measurements are collected at baseline, and then at 9 and 12 months. The accrual goal is 977 patients.This report describes the characteristics of the first 99 patients. Sites of recurrence at study entry were: breast (56%), mastectomy scar/chest wall (35%), and regional lymph nodes (9%). Two-thirds of patients have estrogen-receptor-positive recurrences.This is the only trial actively investigating the question of "adjuvant" chemotherapy in locally recurrent breast cancer. The case mix of accrual to date indicates a broad representation of this patient population.
View details for DOI 10.1245/s10434-008-0129-2
View details for Web of Science ID 000260509400033
View details for PubMedID 18784962
New models and online calculator for predicting non-sentinel lymph node status in sentinel lymph node positive breast cancer patients
30th Annual San Antonio Breast Cancer Symposium
SPRINGER. 2008: 588–88
View details for Web of Science ID 000255851900029
A randomized clinical trial of adjuvant chemotherapy for radically resected locoregional relapse of breast cancer: IBCSG 27-02, BIG 1-02, and NSABP B-37
CLINICAL BREAST CANCER
2008; 8 (3): 287-292
In this phase III, multinational, randomized trial, the International Breast Cancer Study Group, Breast International Group, and the National Surgical Adjuvant Breast and Bowel Project will attempt to define the effectiveness of cytotoxic therapy for patients with locoregional recurrence of breast cancer. We will evaluate whether chemotherapy prolongs disease-free survival and, secondarily, whether its use improves overall survival and systemic disease-free survival. Quality of life measurements will be monitored during the first 12 months of the study. Women who have had a previous diagnosis of invasive breast cancer treated by mastectomy or breast-conserving surgery and who have undergone complete surgical excision of all macroscopic disease but who subsequently develop isolated local and/or regional ipsilateral invasive recurrence are eligible. Patients are randomized to observation/no adjuvant chemotherapy or to adjuvant chemotherapy; all suitable patients receive radiation, hormonal, and trastuzumab therapy. Radiation therapy is recommended for patients who have not received previous adjuvant radiation therapy but is required for those with microscopically positive margins. The radiation field must encompass the tumor bed plus a surrounding margin to a dose of >or= 40 Gy. Radiation therapy will be administered before, during, or after chemotherapy. All women with estrogen receptor-positive and/or progesterone receptor-positive recurrence must receive hormonal therapy, with the agent and duration to be determined by the patient's investigator. Adjuvant trastuzumab therapy is permitted for those with HER2- positive tumors, provided that intent to treat is declared before randomization. Although multidrug regimens are preferred, the agents, doses, and use of supportive therapy are at the discretion of the investigator.
View details for DOI 10.3816/CBC.2008.n.035
View details for Web of Science ID 000256914800013
View details for PubMedID 18650162
- Metastases to the breast: Alveolar soft part sarcoma in adolescents CLINICAL BREAST CANCER 2008; 8 (1): 92-93
Leiomyosarcoma of the breast in a patient with a 10-year-history of cyclophosphamide exposure: a case report.
2008; 1 (1): 301-?
A 50 year old woman with a 10-year history of systemic lupus erythematosus (SLE) and intermittent low-dose cyclophosphamide therapy developed a palpable mass at the periphery of her left breast. Ultrasound guided core biopsy revealed a spindle cell neoplasm characterized on final pathology as a low grade leiomyosarcoma.
View details for DOI 10.1186/1757-1626-1-301
View details for PubMedID 18992149
View details for PubMedCentralID PMC2590612
Egg retrieval with cryopreservation does not delay breast cancer treatment
8th Annual Meeting of the American-Society-of-Breast-Surgeons
EXCERPTA MEDICA INC-ELSEVIER SCIENCE INC. 2007: 477–81
Infertility is a concern to young women diagnosed with breast cancer. Advances in fertility technology have made it possible to bank fertilized embryos.Twenty-three women, ages 27 to 40 years, underwent stimulation/oocyte retrieval before the start of adjuvant therapies. Time intervals between retrieval and therapeutic procedures were analyzed.The average stimulation to egg retrieval was 11.5 days (range 9-20 d). The average time interval from first evaluation to oocyte retrieval was 33.3 days (range 10-65 d). Overall, the mean time from definitive surgery to initiation of chemotherapy was 46.8 days (n = 20). For 6 patients referred by surgeons, the mean time from fertility consult to retrieval was 48.8 days (range 16-118 d), and from definitive surgery to initiation of chemotherapy was 45 days (range 15-93 d).Egg retrieval cryopreservation can be integrated with breast cancer work-up and surgical procedures. Early referrals to a fertility specialist by surgeons will help patients' safeguard future childbearing.
View details for DOI 10.1016/j.amjsurg.2007.06.008
View details for Web of Science ID 000249933000011
View details for PubMedID 17826059
Expression of the Na+/I- symporter (NIS) is markedly decreased or absent in gastric cancer and intestinal metaplastic mucosa of Barrett esophagus
The sodium/iodide symporter (NIS) is a plasma membrane glycoprotein that mediates iodide (I-) transport in the thyroid, lactating breast, salivary glands, and stomach. Whereas NIS expression and regulation have been extensively investigated in healthy and neoplastic thyroid and breast tissues, little is known about NIS expression and function along the healthy and diseased gastrointestinal tract.Thus, we investigated NIS expression by immunohistochemical analysis in 155 gastrointestinal tissue samples and by immunoblot analysis in 17 gastric tumors from 83 patients.Regarding the healthy Gl tract, we observed NIS expression exclusively in the basolateral region of the gastric mucin-producing epithelial cells. In gastritis, positive NIS staining was observed in these cells both in the presence and absence of Helicobacter pylori. Significantly, NIS expression was absent in gastric cancer, independently of its histological type. Only focal faint NIS expression was detected in the direct vicinity of gastric tumors, i.e., in the histologically intact mucosa, the expression becoming gradually stronger and linear farther away from the tumor. Barrett mucosa with junctional and fundic-type columnar metaplasia displayed positive NIS staining, whereas Barrett mucosa with intestinal metaplasia was negative. NIS staining was also absent in intestinalized gastric polyps.That NIS expression is markedly decreased or absent in case of intestinalization or malignant transformation of the gastric mucosa suggests that NIS may prove to be a significant tumor marker in the diagnosis and prognosis of gastric malignancies and also precancerous lesions such as Barrett mucosa, thus extending the medical significance of NIS beyond thyroid disease.
View details for DOI 10.1186/1471-2407-7-5
View details for Web of Science ID 000244252900001
View details for PubMedID 17214887
Resolution of hypoalbuminemia after excision of malignant phyllodes tumor
CLINICAL BREAST CANCER
2006; 7 (5): 411-412
A 42-year-old woman presented with a rapidly growing tumor of the breast accompanied by anemia (7.4 g/dL), hypoalbuminemia (1.6 g/dL), and increased alkaline phosphatase (256 U/L). Magnetic resonance imaging of the breast demonstrated a heterogeneous mass composed of verrucous solid components with hemorrhagic areas. There was no evidence of cachexia, and the metastatic workup was negative. Final pathology revealed a 22-cm malignant phyllodes tumor. Hypoalbuminemia and alkaline phosphatase quickly resolved after surgical excision without any further treatment.
View details for Web of Science ID 000243327200008
View details for PubMedID 17239267
Prognosis after ipsilateral breast tumor recurrence and locoregional recurrences in five national surgical adjuvant breast and bowel project node-positive adjuvant breast cancer trials
JOURNAL OF CLINICAL ONCOLOGY
2006; 24 (13): 2028-2037
Locoregional failure after breast-conserving surgery is associated with increased risk of distant disease and death. The magnitude of this risk in patients receiving chemotherapy has not been adequately characterized.Our study population included 2,669 women randomly assigned onto five National Surgical Adjuvant Breast and Bowel Project node-positive protocols (B-15, B-16, B-18, B-22, and B-25), who were treated with lumpectomy, whole-breast irradiation, and adjuvant systemic therapy. Cumulative incidences of ipsilateral breast tumor recurrence (IBTR) and other locoregional recurrence (oLRR) were calculated. Kaplan-Meier curves were used to estimate distant-disease-free survival (DDFS) and overall survival (OS) after IBTR or oLRR. Cox models were used to model survival using clinical and pathologic factors jointly with IBTR or oLRR as time-varying predictors.Four hundred twenty-four patients (15.9%) experienced locoregional failure; 259 (9.7%) experienced IBTR, and 165 (6.2%) experienced oLRR. The 10-year cumulative incidence of IBTR and oLRR was 8.7% and 6.0%, respectively. Most locoregional failures occurred within 5 years (62.2% for IBTR and 80.6% for oLRR). Age, tumor size, and estrogen receptor status were significantly associated with IBTR. Nodal status and estrogen and progesterone receptor status were significantly associated with oLRR. The 5-year DDFS rates after IBTR and oLRR were 51.4% and 18.8%, respectively. The 5-year OS rates after IBTR and oLRR were 59.9% and 24.1%, respectively. Hazard ratios for mortality associated with IBTR and oLRR were 2.58 (95% CI, 2.11 to 3.15) and 5.85 (95% CI, 4.80 to 7.13), respectively.Node-positive breast cancer patients who developed IBTR or oLRR had significantly poorer prognoses than patients who did not experience these events.
View details for DOI 10.1200/JCO.2005.04.3273
View details for Web of Science ID 000237371500012
View details for PubMedID 16648502
Bioluminescent-inescent monitoring of NIS-mediated I-131 ablative effects in MCF-7 Xenografts
2006; 5 (2): 76-84
Optical imaging has made it possible to monitor response to anticancer therapies in tumor xenografts. The concept of treating breast cancers with (131)I is predicated on the expression of the Na(+)/I- symporter (NIS) in many tumors and uptake of I- in some. The pattern of (131)I radioablative effects were investigated in an MCF-7 xenograft model dually transfected with firefly luciferase and NIS genes. On Day 16 after tumor cell implantation, 3 mCi of (131)I was injected. Bioluminescent imaging using d-luciferin and a cooled charge-coupled device camera was carried out on Days 1, 2, 3, 7, 10, 16, 22, 29, and 35. Tumor bioluminescence decreased in (131)I-treated tumors after Day 3 and reached a nadir on Day 22. Conversely, bioluminescence steadily increased in controls and was 3.85-fold higher than in treated tumors on Day 22. Bioluminescence in (131)I-treated tumors increased after Day 22, corresponding to tumor regrowth. By Day 35, treated tumors were smaller and accumulated 33% less (99m)TcO(4)(-) than untreated tumors. NIS immunoreactivity was present in <50% of (131)I-treated cells compared to 85-90% of controls. In summary, a pattern of tumor regression occurring over the first three weeks after (131)I administration was observed in NIS-expressing breast cancer xenografts.
View details for DOI 10.2310/7290.2006.00008
View details for Web of Science ID 000239285900004
View details for PubMedID 16954021
Magnetic resonance imaging of suspicious breast masses seen on one mammographic view.
2004; 10 (5): 416-422
The purpose of this study was to assess the utility of contrast-enhanced breast magnetic resonance imaging (MRI) in identifying lesions unidentified on the craniocaudal projection. The authors reviewed five patients with suspicious mammographic lesions not imaged on the craniocaudal mammogram who were referred for contrast-enhanced MRI and underwent subsequent preoperative needle localization in four of the five cases. Five patients, ages 56 to 69 years, had suspicious lesions identified on mediolateral oblique (MLO) or mediolateral (ML) projections only. Ultrasound did not identify the lesion in any of these cases. MRI identified suspicious breast lesions measuring 5 to 12 mm in size. These were located high on the chest wall or in the upper inner quadrant. Suspicious lesions seen only on the MLO or ML projections may reside high on the chest wall or in the upper inner quadrant. Lesions in these locations may be typically excluded on the craniocaudal projection during mammography. Breast MRI has the advantage of imaging the entire breast and is particularly useful for these lesions. In this series, MRI prevented delay in breast cancer diagnosis.
View details for PubMedID 15327495
The Na+/I- symporter mediates iodide uptake in breast cancer metastases and can be selectively down-regulated in the thyroid
CLINICAL CANCER RESEARCH
2004; 10 (13): 4294-4302
The Na(+)/I(-) symporter (NIS) is a key plasma membrane protein that mediates active iodide (I(-)) transport in the thyroid, lactating breast, and other tissues. Functional NIS expression in thyroid cancer accounts for the longstanding success of radioactive iodide ((131)I) ablation of metastases after thyroidectomy. Breast cancer is the only other cancer demonstrating endogenous functional NIS expression. Until now, NIS activity in breast cancer metastases (BCM) was unproven.Twenty-seven women were scanned with (99m)TcO(4)(-) or (123)I(-) to assess NIS activity in their metastases. An (131)I dosimetry study was offered to patients with I(-)-accumulating tumors. Selective down-regulation of thyroid NIS was tested in 13 patients with T(3) and in one case with T(3) + methimazole (MMI; blocks I(-) organification). NIS expression was evaluated in index and/or metastatic tumor samples by immunohistochemistry.I(-) uptake was noted in 25% of NIS-expressing tumors (two of eight). The remaining cases did not show NIS expression or activity. Thyroid I(-) uptakes were decreased to =2.8% at 24 h in T(3)-treated patients and 1/100 normal with T(3)/MMI. Uptake (2.9%) was calculated in a peribronchial metastasis on (131)I dosimetry scans at 4 h with disappearance of the signal by 24 h. We estimated a therapeutic dose of 3000 cGy could be achieved in this metastasis with 100 mCi of (131)I if the tumor exhibited the same dynamics as the T(3)/MMI-suppressed thyroid.This is the first article of in vivo, scintigraphically detected, NIS-mediated I(-) accumulation in human BCM. T(3)/MMI down-regulation of thyroid NIS makes (131)I-radioablation of BCM possible with negligible thyroid uptake and radiation damage.
View details for Web of Science ID 000222457300002
View details for PubMedID 15240514
- Elephantiasic prefibial myxedema THYROID 2004; 14 (3): 237-238
The effect acute sleep deprivation experienced in a simulated on-call period on surgical performance
18th Annual Meeting of the Associated-Professional-Sleep-Societies
AMER ACAD SLEEP MEDICINE. 2004: 167–167
View details for Web of Science ID 000223169400367
Immunohistochemical profile of the sodium/iodide symporter in thyroid, breast, and other carcinomas using high density tissue microarrays and conventional sections
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
2003; 88 (4): 1880-1888
Extrathyroidal cancers could potentially be targeted with (131)I, if the Na(+)/I(-) symporter (NIS) were functional. Using immunohistochemical methods we probed 1278 human samples with anti-NIS antibody, including 253 thyroid and 169 breast conventional whole tissue sections (CWTS). Four high density tissue microarrays containing a wide variety of breast lesions, normal tissues, and carcinoma cores were tested. The results of the normal microarray were corroborated in 50 CWTS. Nineteen of 34 normal tissues, including bladder, colon, endometrium, kidney, prostate, and pancreas, expressed NIS. Nineteen of 25 carcinomas demonstrated NIS immunopositivity; 55.7% of 479 carcinoma microarray cores expressed NIS, including prostate (74%), ovary (73%), lung (65%), colon (62.6%), and endometrium (56%). NIS protein was present in 75% benign thyroid lesions, 73% thyroid cancers, 30% normal-appearing, peritumoral breasts, 88% ductal carcinomas in situ, and 76% invasive breast carcinoma CWTS. Comparatively, breast microarray cores had lower immunoreactivity. Plasma membrane immunopositivity was confirmed in thyrocytes, salivary ductal, gastric mucosa, and lactating mammary cells. In other tissues, immunoreactivity was predominantly intracellular, particularly in malignant lesions. Thus, NIS is present in many normal epithelial tissues and is predominantly expressed intracellularly in many carcinomas. Elucidating the regulatory mechanisms that render NIS functional in extrathyroidal carcinomas may make (131)I therapy feasible.
View details for DOI 10.1210/jc.2002-021544
View details for Web of Science ID 000182211000072
View details for PubMedID 12679487
The inverse relationship between microvessel counts and tumor volume in breast cancer.
2001; 7 (3): 184-188
Angiogenesis has emerged as an indicator of metastatic potential in invasive breast cancer. Exponential tumor growth and the appearance of metastasis are observed as new microvessels form. We postulated that the relevance of angiogenesis would be enhanced if analyzed as a function of tumor volume rather than greatest diameter alone and that microvessel counts would proportionately increase as does volume. Since tumors are three-dimensional solids, volume was calculated using the formula for an ellipsoid, V = pi/6 (a x b x c). Sixty-four tumors < or = 2.5 cm were studied and analyzed in 5 mm incremental ranges. Mean microvessel counts did not vary significantly among these tumor size groups. However, analysis of microvessel counts as a function of tumor volume decreased from 947.1/cm3 (0-0.5 cm) to 18.1/cm3 (2.1-2.5 cm), a greater than 50-fold difference. High microvessel density in small cancers supports the notion of metastasis as an early event, making these small tumors perhaps ideal targets for antiangiogenic agents.
View details for PubMedID 11469933
The mammary gland iodide transporter is expressed during lactation and in breast cancer
2000; 6 (8): 871-878
The sodium/iodide symporter mediates active iodide transport in both healthy and cancerous thyroid tissue. By exploiting this activity, radioiodide has been used for decades with considerable success in the detection and treatment of thyroid cancer. Here we show that a specialized form of the sodium/iodide symporter in the mammary gland mediates active iodide transport in healthy lactating (but not in nonlactating) mammary gland and in mammary tumors. In addition to characterizing the hormonal regulation of the mammary gland sodium/iodide symporter, we demonstrate by scintigraphy that mammary adenocarcinomas in transgenic mice bearing Ras or Neu oncogenes actively accumulate iodide by this symporter in vivo. Moreover, more than 80% of the human breast cancer samples we analyzed by immunohistochemistry expressed the symporter, compared with none of the normal (nonlactating) samples from reductive mammoplasties. These results indicate that the mammary gland sodium/iodide symporter may be an essential breast cancer marker and that radioiodide should be studied as a possible option in the diagnosis and treatment of breast cancer.
View details for Web of Science ID 000165473800029
View details for PubMedID 10932223
Subtle differences in quality of life after breast cancer surgery
82nd Surgical Forum of the American-College-of-Surgeons
SPRINGER. 1999: 359–66
Lumpectomy with axillary dissection (LAD) has taken its place alongside mastectomy (M) as the treatment of choice for stage I and II breast cancer. Its appeal is based on lessening disfigurement and thus improving quality of life.We used the SF-36 Health Survey modified with ten questions relevant to breast cancer surgery to evaluate whether quality of life with LAD was better than with mastectomy in women with stage I and II disease. The additional questions addressed satisfaction with intimate relationships and sexuality, and explored impact on the way women dress, use bathing suits, hug people, are comfortable with nudity, and rate their sexual drive and sexual responsiveness.LAD was not associated with statistically significant better quality-of-life scores on any SF-36 questions, except vitality (P = .02). No differences were noted in the areas of intimacy and sexual satisfaction. LAD patients reported significant differences in matters of dress, use of bathing suits, hugging, comfort with nudity, and sexual drive compared to patients undergoing mastectomy.The SF-36 health survey detected few differences in quality of life measures between patients with LAD and those with mastectomy. However, LAD impacts favorably on the way women dress, on comfort with nudity, and on sexual drive.
View details for Web of Science ID 000080715300009
View details for PubMedID 10379856
- The verbal abuse of resident physicians Disease Management and Clinical Outcomes 1999; 1 (6): 203-206
Collagen gene expression in the neomatrix of carcinoma of the breast
INVASION & METASTASIS
1996; 16 (6): 308-316
Excessive deposition of extracellular matrix or neomatrix is a characteristic of desmoplastic invasive breast carcinomas. Type I and III collagens are abundant neomatrix components. Archival breast tissue sections were studied using 35S-labeled cDNA probes for alpha 1(I) and alpha 1(III) procollagen and in situ hybridization. Among the 33 invasive breast cancers, hybridization was seen forming a gradient-like pattern in fibroblasts closest to tumor cells. In the 10 ductal carcinomas in situ studied, a ring-like pattern of hybridization was seen in proximity to the basement membrane zone. Adjacent normal and benign tissues did not demonstrate the patterns of hybridization described in malignant tissues. Gene expression for neomatrix interstitial collagens occurs before there is evidence of invasion in carcinoma of the breast.
View details for Web of Science ID A1997YE40000005
View details for PubMedID 9371230
Three dimensional staging of breast cancer
BREAST CANCER RESEARCH AND TREATMENT
1996; 41 (1): 15-19
Breast cancers are three dimensional solids but very few are spherical. We hypothesized that calculations based on the greatest diameter would not accurately reflect tumor volume and that three dimensional measurements would affect tumor staging.165 invasive carcinomas measuring 2.5 cm or less and having three measured diameters (a > or = b > or = c) noted were evaluated. Tumor volume was calculated using four geometric models: the spherical 4/3 pi (a/2)3, prolate spheroid 4/3 pi (a/2) (c/2)2, oblate spheroid 4/3 pi (a/2)2 (b/2), and ellipsoid 4/3 pi (a/2 x b/2 x c/2). The ellipsoid correctly determined the volume for any tumor shape. All cases were stratified according to the TNM staging system. Differences in mean volume calculated as a sphere and ellipsoid for each tumor subclass were analyzed using Student's T test. The reclassification of tumors by the ellipsoid formula was determined.Seventy-six (46.1%) had tumors with three different diameters while only six (3.6%) were true spheres having three identical diameters. Mean tumor volume analysis of T1a, T1b, T1c, and T2 tumors demonstrated a statistically significant overestimation of volume when utilizing the sphere formula instead of the ellipsoid formula (p < 0.05). The differences in volume were more dramatic as the diameters increased. A total of 41 tumors were moved into smaller T subclasses including 10 node positive patients.Tumor volume analysis demonstrates that use of only the greatest diameter poorly reflects the true volume of a lesion and consistently overestimates volume. The ellipsoid formula accurately calculates volume for these three dimensional tumors and when utilized has significant relevance to staging small invasive breast cancers.
View details for Web of Science ID A1996VR62000002
View details for PubMedID 8932872
- Pathologic differences in nonpalpable breast cancers detected by xeromammography and film screen mammography Breast Disease 1996; 9 (4): 203-210
- Superior quality of life following lumpectomy-axillary dissection in patients with stage I and stage II beast cancer Surgical Forum 1996; XLVII: 635-636
- Local recurrence after breast conservation Current Surgery 1996; 53 (161): 8-13
- Stage II ductal carcinoma arising in a fibroadenoma Breast Disease 1995; 8: 57-61
COLLAGEN-INDUCED MMP-2 ACTIVATION IN HUMAN BREAST-CANCER
BREAST CANCER RESEARCH AND TREATMENT
1994; 31 (2-3): 357-370
Matrix metalloproteinase-2 (MMP-2), a zymogen requiring proteolytic activation for catalytic activity, has been implicated broadly in the invasion and metastasis of many cancer model systems, including human breast cancer (HBC). MMP-2 has been immunolocalized to carcinomatous human breast, where the degree of activation of MMP-2 correlates well with tumor grade and patient prognosis. Using Matrigel assays, we have stratified HBC cell lines for invasiveness in vitro, and compared this to their potential for metastatic spread in nude mice. HBC cell lines expressing the mesenchymal marker protein vimentin were found to be highly invasive in vitro, and tended to form metastases in nude mice. We have further discovered that culture on collagen-I gels (Vitrogen; Vg) induces MMP-2-activator in highly invasive but not poorly invasive HBC cell lines. As seen for other MMP-2-activator inducing regimens, this induction requires protein synthesis and an intact MMP-2 hemopexin-like domain, appears to be mediated by a cell surface activity, and can be inhibited by metalloproteinase inhibitors. The induction is highly specific to collagen I, and is not seen with thin coatings of collagen I, collagen IV, laminin, or fibronectin, or with 3-dimensional gels of laminin, Matrigel, or gelatin. This review focuses on collagen I and MMP-2, their localization and source in HBC, and their relationship(s) to MMP-2 activation and HBC metastasis. The relevance of collagen I in activation of MMP-2 in vivo is discussed in terms of stromal cell: tumor cell interaction for collagen I deposition, MMP-2 production, and MMP-2-activation. Such cooperativity may exist in vivo for MMP-2 participation in HBC dissemination. A more complete understanding of the regulation of MMP-2-activator by type I collagen may provide new avenues for improved diagnosis and prognosis of human breast cancer.
View details for Web of Science ID A1994PK88900022
View details for PubMedID 7881112
Mammographic changes following biopsy and lumpectomy-breast irradiation.
New Jersey medicine : the journal of the Medical Society of New Jersey
1993; 90 (1): 55-59
Mammographic architectural distortion occurred at the operative site in 86 percent of lumpectomy patients and in 34 percent of biopsy patients during the first year (P < 0.001). These changes can mimic carcinoma and may be slow to resolve.
View details for PubMedID 8380491
A REAPPRAISAL OF PROPHYLACTIC MASTECTOMY
SURGERY GYNECOLOGY & OBSTETRICS
1990; 171 (2): 171-184
The concept of prophylactic mastectomy was nurtured in the shadow of the radical mastectomy. It evolved as preferable to the mutilation caused by the procedure. It developed during a time when the difference between benignancy and malignancy was not as clear and when patients with benign disease were thought to be at significant risk. The idea of surgical prophylaxis accompanied by a superior cosmetic result, in comparison to the radical mastectomy is a noble one. In retrospect, however, it is clear that the indications were ill defined, based often on unfounded risk and predicated on patient and physician anxiety. The scope of risk in carcinoma of the breast has been narrowed, with new information identifying only specific subsets of women with proliferative types of benign disease as more susceptible to the subsequent development of carcinoma. Extensive reviews of material taken at biopsy that had been validated longitudinally have provided data to substantiate this contention. The concept of familial high risk must take into account the number of affected family members, at age diagnosis, menopausal status and bilaterality. The majority of indicants that motivated and propitiated the performance of the bulk of prophylactic mastectomies have lost their relevance. Prophylactic mastectomy for carcinoma, therefore, can perhaps be reserved for women with biopsy-proved, high-risk lesions or an exceptional familial risk, or both, or hereditary risk. Such women must choose for themselves and accept the uncertainty of hypothetic risk reduction, life-long continued surveillance and an altered body image. Guiding patients in the decision should involve a multidisciplinary team composed of a surgical oncologist, geneticist, pathologist, psychotherapist and plastic surgeon. As a concept, the reduction of risk is appealing, but remains yet to prove itself superior to rigorous clinical surveillance with high-quality mammography. The experience reflected in the literature of a seemingly low rate of subsequent carcinoma cannot be judged, because it seems that operations were applied indiscriminantly to patients selected by unknown means and from an unknown population pool. Success based on protecting those not at increased risk only invalidates the operation further. Most surgical and medical oncologists recognize that carcinoma of the breast is either localized or disseminated at the time of the initial diagnosis.(ABSTRACT TRUNCATED AT 400 WORDS)
View details for Web of Science ID A1990DR88900018
View details for PubMedID 2200150
COMPARTMENT SYNDROME IN COMBINED ARTERIAL AND VENOUS INJURIES OF THE LOWER-EXTREMITY
AMERICAN JOURNAL OF SURGERY
1989; 158 (2): 136-141
In 9 of 45 patients treated for dual vascular injuries of the lower extremity, concomitant fasciotomies were performed at the time of initial surgery for associated soft tissue injury, fracture, or prolonged ischemia. Eight other patients developed compartment syndrome requiring delayed fasciotomy. In seven of them, vein was either ligated or the repaired vein became occluded. In the eighth patient, peripheral venous hypertension was caused by massive swelling of the thigh. In the laboratory, compartment pressure was monitored by wick catheter in 24 hind limbs of 12 dogs subjected to experimental conditions simulating vascular injuries and their management. There was a significant increase in compartment pressure in a group that simulated arterial and venous injuries managed by arterial repair and venous outflow obstruction. Based on our study, we suggest that obstruction to venous drainage and venous hypertension are major factors in the development of compartment syndrome in dual vascular injuries of the lower extremity.
View details for Web of Science ID A1989AK11300011
View details for PubMedID 2757141
- Residual tumor and breast biopsy margins Breast Disease 1989; 2: 81-86
- ASYMMETRICAL BREASTS IN AN ADOLESCENT PLASTIC AND RECONSTRUCTIVE SURGERY 1988; 81 (5): 813-813
NONOPERATIVE MANAGEMENT VERSUS EARLY OPERATION FOR BLUNT SPLENIC TRAUMA IN ADULTS
SURGERY GYNECOLOGY & OBSTETRICS
1988; 166 (3): 252-258
Forty-eight adult patients with isolated splenic trauma from blunt injury were analyzed during a six year period (1980 to 1986). Early laparotomy was performed upon 38 patients and splenic preservation was accomplished in 18. The remaining ten patients who were hemodynamically stable were managed nonoperatively with close monitoring. Splenic injuries were confirmed by one of the imaging methods, such as computed tomography, radionuclide scan or ultrasound. One patient with known hepatic cirrhosis underwent embolization of the splenic artery and recovered. Nonoperative treatment failed in seven of the remaining nine patients, mandating an exploratory laparotomy between the third and tenth day of admission. In six of the seven patients, splenic preservation was unsuccessful, necessitating a splenectomy. The length of hospital stay was longer for this latter group (a mean of 15.8 days) than for patients who had splenorrhaphy (a mean of 7.5 days), or splenectomy (a mean of 8.7 days, p less than 0.001). Patients managed nonoperatively required more units of blood compared with those undergoing splenorrhaphy (4.1 units versus 1.7 units, p less than 0.01). A review of the literature reveals that splenic preservation is possible in less than 25 per cent of the patients who fail to respond to nonoperative management. We conclude that splenic injuries after blunt trauma in adults are treated best by early laparotomy in order to achieve maximal splenic preservation.
View details for Web of Science ID A1988M333100010
View details for PubMedID 3344454
PORTAL-VEIN INJURIES - NONINVASIVE FOLLOW-UP OF VENORRHAPHY
ANNALS OF SURGERY
1987; 206 (6): 733-737
The authors report their experience with 14 patients with portal vein injuries (1976-1986) treated at a level I trauma center. Seven patients (50%) survived and included six of 10 patients (60%) who had venorrhaphy and one in whom the portal vein was ligated. Associated injuries were present in all the patients (mean Abdominal Trauma Index: 39.5) and accounted for the high mortality rate. Follow-up data after repair or ligation of the portal vein seldom are reported in the literature. The authors studied all three patients who survived portal venorrhaphy since 1982 by real-time ultrasonography. Patency of the repair could be established in two patients. In the third patient postvenorrhaphy thrombosis was diagnosed by ultrasonographic examination. Sequential ultrasonographic examinations demonstrated resolution of the thrombus on anticoagulant therapy. Ultrasonography provides a noninvasive and easily reproducible method of studying the portal vein after repair.
View details for Web of Science ID A1987L074700008
View details for PubMedID 3318729
PYOGENIC SPLENIC ABSCESS IN INTRAVENOUS DRUG-ADDICTION
1987; 53 (6): 342-346
Among the surgical complications of intravenous drug addiction, pyogenic splenic abscess is considered to be a rare entity. A review of the literature reveals only 24 cases of splenic abscess secondary to this particular etiology. The authors report five patients with intravenous drug addiction who underwent splenectomy for pyogenic splenic abscess within 1 year. Fever and abdominal pain were the only constant physical signs. Three patients had associated infective endocarditis, and the other two patients sustained blunt trauma to the left side of the trunk weeks earlier. Computed tomography (CT) and ultrasound were diagnostic in all five patients preoperatively, and they were complementary when combined. Four of the five patients had Staphylococcus aureus septicemia at the time of splenectomy. Three patients recovered from their operations, and the other two, both with endocarditis, died postoperatively from causes unrelated to splenic abscess and splenectomy. A high index of suspicion is warranted in this susceptible group of patients with vague abdominal signs and persistent sepsis to rule out splenic suppuration. The noninvasive imaging methods, CT scan and ultrasound, facilitate early diagnosis in these patients.
View details for Web of Science ID A1987H551200010
View details for PubMedID 3579050
[Gastroesophageal reflux in children. Experience in 100 cases treated by Nissen's fundoplication].
Boletín médico del Hospital Infantil de México
1985; 42 (4): 256-265
View details for PubMedID 4005025
- LATENT MAMMARY TUBERCULOSIS - A CASE-REPORT SURGERY 1985; 98 (5): 976-978
- Muerte inesperada y sindrome de muerte subita en la infancia PAtologia (Mexico) 1980; 18: 341-350
- MAGNESIUM-METABOLISM IN EXPERIMENTAL DIABETES-MELLITUS DIABETES 1977; 26 (9): 882-886