Mardi Karin, MD, FACS

All Publications

• Contemporary mastectomy options for male breast cancer: nipple-sparing and areolar-sparing mastectomy-a case series ANNALS OF BREAST SURGERY Anderson, T. N., Bao, J., Ayala, C., Wapnir, I., Karin, M. R. 2024; 8

  View details for DOI 10.21037/abs-23-64

  View details for Web of Science ID 001315164600007

• Surgeon-Placed Pectoralis and Serratus Plane Blocks under Direct Visualization for Mastectomy and Immediate Breast Reconstruction Provide Excellent Postoperative Analgesia Foulad, D. S., Xu, A. F., Scott, M. K., Selfridge, J., Cheng, T., Momeni, A., Karin, M. R. LIPPINCOTT WILLIAMS & WILKINS. 2023: S47-S48

  View details for Web of Science ID 001094086300074

• Enhanced Recovery Pathway for Outpatient Breast Operation: Surgeon-Placed Local Anesthetic Provides Excellent Postoperative Analgesia and Minimizes Opioids Xu, A., Foulad, D. S., Selfridge, J., Cheng, T., Karin, M. R. LIPPINCOTT WILLIAMS & WILKINS. 2023: S55

  View details for Web of Science ID 001094086300094

• Frailty Analysis and Outcomes of Breast Cancer Surgery in Elderly Patients Aged 85 and Older Foulad, D., Wapnir, I., Xu, A., Stone, K., Dirbas, F., Karin, M., Najafzadeh, P., Allison, K., Tsai, J. SPRINGER. 2023: S331-S332

  View details for Web of Science ID 000999257500037

• Nipple-areola-complex preservation and obesity-Successful in stages. Microsurgery Daly, L., Tsai, J., Stone, K., Wapnir, I., Karin, M., Wan, D., Momeni, A. 2023

  Abstract

  The superiority of nipple-sparing mastectomy (NSM) on breast aesthetics and patient-reported outcomes has previously been demonstrated. Despite 42.4% of adults in the United States being considered obese, obesity has been considered a contraindication to NSM due to concerns for nipple areolar complex (NAC) malposition or ischemic complications. This report investigates the feasibility and safety of a staged surgical approach to NSM with immediate microsurgical breast reconstruction in the high-risk obese population.Only patients with a body mass index (BMI) of >30 kg/m2 who underwent bilateral mastopexy or breast reduction for correction of ptosis or macromastia (stage 1), respectively, followed by bilateral prophylactic NSM with immediate microsurgical breast reconstruction with free abdominal flaps (stage 2) were included in the analysis. Patient demographics and surgical outcomes were analyzed.Fifteen patients with high-risk genetic mutations for breast cancer with a mean age and BMI of 41.3 years and 35.0 kg/m2 , respectively, underwent bilateral staged NSM with immediate microsurgical breast reconstruction (30 breast reconstructions). At a mean follow-up of 15.7 months, complications were encountered following stage 2 only and included mastectomy skin necrosis (5 breasts [16.7%]), NAC necrosis (2 breasts [6.7%]), and abdominal seroma (1 patient [6.7%]) all of which were considered minor and neither required surgical intervention nor admission.Implementation of a staged approach permits NAC preservation in obese patients who present for prophylactic mastectomy and immediate microsurgical reconstruction.

  View details for DOI 10.1002/micr.31043

  View details for PubMedID 37013250

• Contemporary Nipple-Sparing Mastectomy Technique to Preserve the Internal Mammary Perforator Blood Flow to the Nipple and Analysis of Outcomes Karin, M., Momeni, A. LIPPINCOTT WILLIAMS & WILKINS. 2022: S5

  View details for Web of Science ID 000867877000011

• Nipple Sparing Mastectomy Technique to Reduce Ischemic Complications: Preserving Important Blood Flow Based on Breast MRI. World journal of surgery Karin, M. R., Pal, S., Ikeda, D., Silverstein, M., Momeni, A. 2022

  Abstract

  Nipple-sparing mastectomy (NSM) with immediate breast reconstruction is commonly performed. However, nipple areolar complex (NAC) and mastectomy skin necrosis represent significant complications requiring reoperation and revision. Breast MRI, often obtained for oncologic assessment, can visualize the dominant breast and NAC vascular supply. This study describes the surgical technique utilizing breast MRI blood flow information to preserve important NAC blood supply, thereby, reducing ischemic complications.After IRB approval, a prospectively maintained database of all NSM by a single breast surgeon from 2018 to 2020 formed the study group. Preoperative contrast enhanced Breast MRI analysis determined the dominant NAC blood supply. Intraoperatively, the dominant Internal Mammary Artery Perforator (IMP) to the NAC was preserved (IMP-NSM). The IMP-NSM surgical technique preserving the IMP blood flow, evaluation of breast MRI blood flow patterns, surgical findings, and ischemic complications were analyzed.114 NSM were performed in 74 patients (mean age: 49 years [range, 22-73 years], BMI 25.8 kg/m2 [range, 19-41 kg/m2]). Breast MRI identified the dominant IMP to the NAC in 92%. IMP preservation was successful in 89% (101/114). Necrosis requiring NAC removal occurred in 0.9% (1/114), and skin necrosis reoperation in 1.8% (2/114). Including all post-operative necrosis occurred in 10.5% (12/114), statistically significantly lower compared to the literature for NSM assessing MRI blood flow data without surgical IMP preservation (necrosis 24.4%, p < 0.001) (Bahl et al. in J Am Coll Surg 223(2):279-285, 2016) utilizing Doppler for IMP preservation (necrosis 37%, p < 0.001) (Swistel et al. in Plast Reconstr Surg Glob Open 2(8):e198, 2014) and dividing the IMP in all (necrosis 31.4%, p < 0.001) (Ahn et al. in Eur J Surg Oncol 44(8):1170-1176, 2018).The IMP-NSM surgical technique preserves the dominant blood supply to the NAC, thereby, decreasing ischemic complications.

  View details for DOI 10.1007/s00268-022-06764-x

  View details for PubMedID 36207418

• Patient perspectives on window of opportunity clinical trials in early-stage breast cancer. Breast cancer research and treatment Parikh, D. A., Kody, L., Brain, S., Heditsian, D., Lee, V., Curtis, C., Karin, M. R., Wapnir, I. L., Patel, M. I., Sledge, G. W., Caswell-Jin, J. L. 2022

  Abstract

  Window of opportunity trials (WOT) are increasingly common in oncology research. In WOT participants receive a drug between diagnosis and anti-cancer treatment, usually for the purpose of investigating that drugs effect on cancer biology. This qualitative study aimed to understand patient perspectives on WOT.We recruited adults diagnosed with early-stage breast cancer awaiting definitive therapy at a single-academic medical center to participate in semi-structured interviews. Thematic and content analyses were performed to identify attitudes and factors that would influence decisions about WOT participation.We interviewed 25 women diagnosed with early-stage breast cancer. The most common positive attitudes toward trial participation were a desire to contribute to research and a hope for personal benefit, while the most common concerns were the potential for side effects and how they might impact fitness for planned treatment. Participants indicated family would be an important normative factor in decision-making and, during the COVID-19 pandemic, deemed the absence of family members during clinic visits a barrier to enrollment. Factors that could hinder participation included delay in standard treatment and the requirement for additional visits or procedures. Ultimately, most interviewees stated they would participate in a WOT if offered (N = 17/25).In this qualitative study, interviewees weighed altruism and hypothetical personal benefit against the possibility of side effect from a WOT. In-person family presence during trial discussion, challenging during COVID-19, was important for many. Our results may inform trial design and communication approaches in future window of opportunity efforts.

  View details for DOI 10.1007/s10549-022-06611-6

  View details for PubMedID 35538268

• Nipple-sparing mastectomy with internal mammary artery perforator preservation based on breast MRI reduces ischemic complications Karin, M., Pal, S., Silverstein, M., Momeni, A. SPRINGER. 2022: 205-207

  View details for Web of Science ID 000780965900147

• Impact of Incision Placement on Ischemic Complications in Microsurgical Breast Reconstruction. Plastic and reconstructive surgery Tevlin, R., Griffin, M., Karin, M., Wapnir, I., Momeni, A. 1800; 149 (2): 316-322

  Abstract

  BACKGROUND: Nipple-sparing mastectomy is associated with greater patient satisfaction than non-nipple-sparing approaches. Although various nipple-sparing mastectomy incisions have been described, the authors hypothesized that incision location would impact the rate and location of ischemic complications to the mastectomy skin flap.METHODS: A prospectively maintained database was queried to identify patients who underwent nipple-sparing mastectomy with immediate microsurgical reconstruction with a minimum postoperative follow-up of 12 months. The impact of incision location on postoperative ischemic complications was investigated. Major complications were defined as those that required reexploration in the operating room or inpatient management; minor complications were amenable to outpatient management. Multivariable logistic and linear regression were performed to investigate risk factors for postoperative complications following breast reconstruction.RESULTS: Eighty-seven patients met inclusion criteria. The following nipple-sparing mastectomy incisions were used: radial with a periareolar extension (39 percent), inframammary fold (31 percent), vertical with a periareolar extension (22 percent), vertical (6 percent), and radial (2 percent). Seven patients (8 percent) had major complications, whereas twenty-six patients (29.9 percent) developed minor postoperative complications. Inframammary fold incisions were associated with significantly greater rates of mastectomy skin flap necrosis (p = 0.002), whereas periareolar incisions were associated with significantly greater rates of postoperative nipple-areola complex necrosis (p = 0.04).CONCLUSIONS: The authors report a significant association between incision location and ischemic complications to the breast skin envelope in microsurgical breast reconstruction. The authors observed a significant association of inframammary fold and periareolar incisions with mastectomy skin flap and nipple-areola complex necrosis, respectively.CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.

  View details for DOI 10.1097/PRS.0000000000008770

  View details for PubMedID 35077404

• Prevention of Postoperative Lymphedema for Breast Cancer Surgery with Axillary Lymph Node Dissection Combined with Lympha and Lymphatic Preservation: Patient Selection and Outcomes Karin, M. R., He, H., Posternak, V. R., Bowler, A., Dung Nguyen ELSEVIER SCIENCE INC. 2021: E17-E18

  View details for Web of Science ID 000718306700045

• Utilizing Breast MRI Blood Flow Data to Improve Clinical Outcomes Following Skin Sparing Mastectomy and Nipple Sparing Mastectomy Karin, M. R., Wu, R., Black, C. K., Momeni, A. ELSEVIER SCIENCE INC. 2021: E13

  View details for Web of Science ID 000718306700033

• Lymphatic Microsurgical Preventive Healing Approach (LYMPHA) for Lymphedema Prevention after Axillary Lymph Node Dissection-A Single Institution Experience and Feasibility of Technique. Journal of clinical medicine Lipman, K., Luan, A., Stone, K., Wapnir, I., Karin, M., Nguyen, D. 2021; 11 (1)

  Abstract

  While surgical options exist to treat lymphedema after axillary lymph node dissection (ALND), the lymphatic microsurgical preventive healing approach (LYMPHA) has been introduced as a preventive measure performed during the primary surgery, thus avoiding the morbidity associated with lymphedema. Here, we highlight details of our operative technique and review postoperative outcomes. For our patients, limb measurements and body composition analyses were performed pre- and postoperatively. Intraoperatively, axillary reverse lymphatic mapping was performed with indocyanine green (ICG) and lymphazurin. SPY-PHI imaging was used to visualize the ICG uptake into axillary lymphatics. Cut lymphatics from excised nodes were preserved for lymphaticovenous anastomosis (LVA). At the completion of the microanastomosis, ICG was visualized draining from the lymphatic through the recipient vein. A retrospective review identified nineteen patients who underwent complete or partial mastectomy with ALND and subsequent LYMPHA over 19 months. The number of LVAs performed per patient ranged between 1-4 per axilla. The operating time ranged from 32-95 min. There were no surgical complications, and thus far one patient developed mild lymphedema with an average follow up of 10 months. At the clinic follow up, ICG and SPY angiography were used to confirm intact lymphatic conduits with an uptake of ICG across the axilla. This study supports LYMPHA as a feasible and effective method for lymphedema prevention.

  View details for DOI 10.3390/jcm11010092

  View details for PubMedID 35011833

• The Impact of Device Innovation on Clinical Outcomes in Expander-based Breast Reconstruction PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN Momeni, A., Li, A. Y., Tsai, J., Wan, D., Karin, M. R., Wapnir, I. L. 2019; 7 (12)

  View details for DOI 10.1097/GOX.0000000000002524

  View details for Web of Science ID 000512700800009

• The Impact of Device Innovation on Clinical Outcomes in Expander-based Breast Reconstruction. Plastic and reconstructive surgery. Global open Momeni, A., Li, A. Y., Tsai, J., Wan, D., Karin, M. R., Wapnir, I. L. 2019; 7 (12): e2524

  Abstract

  Staged expander-based breast reconstruction represents the most common reconstructive modality in the United States. The introduction of a novel tissue expander with an integrated drain (Sientra AlloX2) holds promise to further improve clinical outcomes.Patients who underwent immediate expander-based pre-pectoral breast reconstruction were identified. Two cohorts were created, that is, patients who underwent placement of a conventional tissue expander [133MX (Allergan)] (Group 1) versus AlloX2 (Sientra) (Group 2). The study endpoint was successful completion of expansion with the objective being to investigate differences in outcome following expander placement.Fifty-eight patients underwent 99 breast reconstructions [Group 1: N = 24 (40 breasts) versus Group 2: N = 34 (59 breast)]. No differences were noted for age (P = 0.586), BMI (P = 0.109), history of radiation (P = 0.377), adjuvant radiotherapy (P = 1.00), and overall complication rate (P = 0.141). A significantly longer time to drain removal was noted in Group 1 (P < 0.001). All patients with postoperative infection in Group 1 required surgical treatment versus successful washout of the peri-prosthetic space via the AlloX2 drain port in 3 of 5 patients in Group 2 (P = 0.196). Furthermore, both cases of seroma in Group 1 required image-guided drainage versus in-office drainage via the AlloX2 drain port in 1 patient in Group 2 (P =0.333).The unique feature of the AlloX2 provides surgeons easy access to the peri-prosthetic space without altering any of the other characteristics of a tissue expander. This resulted in a reduced time to drain removal and facilitated management of postoperative seroma and infection.

  View details for DOI 10.1097/GOX.0000000000002524

  View details for PubMedID 32537287

  View details for PubMedCentralID PMC7288893