“Hook Shape” Nipple-Sparing Mastectomy and Prepectoral Implant Reconstruction: Technique, Results and Outcomes from a Preliminary Case Series

Introduction Nipple-sparing mastectomy (NSM) is a surgical procedure increasingly performed for breast cancer or risk reduction surgeries. The site of skin incision seems to affect not only cosmesis but also technical ease in operating and vascular viability of the nipple. We present a series of patients who underwent a modified vertical surgical approach for NSM, which resulted to be safe, reliable, and with good esthetic results.Materials and Methods From December 2016 to February 2019, 27 "Hook Shape'' incision NSMs were performed. All patients underwent an immediate subcutaneous muscle-sparing reconstruction with tissue expander covered by a titanium-coated polypropylene mesh, followed by a second surgical step with expander substitution and lipofilling on the definitive implant when indicated. Preoperative and postoperative BREAST-Q patient-reported outcomes measure was performed in all cases.Results Postoperative morbidity was evaluated: One patient developed seroma and another presented a systemic infection that resolved with intravenous infusion of antibiotics. One patient experienced vertical wound dehiscence, recovered after conservative treatment and without implant exposure. No implant loss was observed. Nipple-areola complex necrosis or ischemia rate was 0%. The BREAST-Q outcomes reported significant increases in the overall satisfaction with breast (p<0.05), psychosocial well-being (p<0.05), and sexual well-being (p<0.05) sections. Scores in the physical impact of surgery section appeared to decline from preoperative to postoperative evaluations, with no statistically significant results.Conclusion The mastectomy incision pattern can burden the surgical challenge, impact vascular viability of the nipple and significantly affect the aesthetic outcomes in breast reconstruction. We report our experience with an alternative approach for NSM, which appears a safe, practical, and reproducible method for patients with small-to medium-sized breasts and little/medium ptosis (grade I or II).