Ayaka Shimo1, Koichiro Tsugawa2, Seiko Tsuchiya2, Reiko Yoshie2, Kyoko Tsuchiya2, Tomoko Uejima2, Yasuyuki Kojima2, Arata Shimo2, Ryosuke Hayami2, Toru Nishikawa2, Yukari Yabuki2, Hisanori Kawamoto2,3, Akihiko Sudo3, Mamoru Fukuda3, Yoshihide Kanemaki4, Ichiro Maeda5. 1. Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-Shi, Kanagawa, 216-8511, Japan. a2koike@marianna-u.ac.jp. 2. Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-Shi, Kanagawa, 216-8511, Japan. 3. Breast and Imaging Center, St. Marianna University School of Medicine, Kanagawa, Japan. 4. Department of Radiology, St. Marianna University School of Medicine, Kanagawa, Japan. 5. Department of Pathology, St. Marianna University School of Medicine, Kanagawa, Japan.
Abstract
BACKGROUND: Nipple-sparing mastectomy (NSM) is an advantageous treatment option, providing a complete cure and good cosmetic results. We tested whether NSM is a surgically and oncologically safe technique. METHODS: We evaluated the oncological outcome of 425 breasts in 413 patients who underwent NSM between January 2000 and March 2013. We retrospectively reviewed patient data and analyzed all patient characteristics as potential risk factors of recurrence at the nipple-areola complex (NAC). To confirm the oncological safety of NSM, we compared outcomes of NSM and conventional total mastectomy. RESULTS: The median follow-up time after surgery was 46.8 months (range 6-158 months). Nipple necrosis was observed in 6 cases (1.4 %). The cumulative local recurrence rate after NSM was 5.8 % (25/425 cases), similar to that of conventional total mastectomy in the same period (5.6 %, 49/878 cases). Furthermore, the cumulative local recurrence rate at the NAC was 2.3 % (10 cases). HER2-enriched tumors and young age (<40 years) were significant risk factors for recurrence at the NAC. In patients with recurrence, the site of recurrence was easily excised, and good cosmetic results were achieved in breast reconstruction cases. CONCLUSION: NSM is safe with a low complication rate. No significant difference was observed in cumulative local recurrence rate, cumulative distant disease recurrence rate, and overall survival between patients who underwent NSM or conventional total mastectomy, confirming that NSM was surgically and oncologically safe.
BACKGROUND: Nipple-sparing mastectomy (NSM) is an advantageous treatment option, providing a complete cure and good cosmetic results. We tested whether NSM is a surgically and oncologically safe technique. METHODS: We evaluated the oncological outcome of 425 breasts in 413 patients who underwent NSM between January 2000 and March 2013. We retrospectively reviewed patient data and analyzed all patient characteristics as potential risk factors of recurrence at the nipple-areola complex (NAC). To confirm the oncological safety of NSM, we compared outcomes of NSM and conventional total mastectomy. RESULTS: The median follow-up time after surgery was 46.8 months (range 6-158 months). Nipple necrosis was observed in 6 cases (1.4 %). The cumulative local recurrence rate after NSM was 5.8 % (25/425 cases), similar to that of conventional total mastectomy in the same period (5.6 %, 49/878 cases). Furthermore, the cumulative local recurrence rate at the NAC was 2.3 % (10 cases). HER2-enriched tumors and young age (<40 years) were significant risk factors for recurrence at the NAC. In patients with recurrence, the site of recurrence was easily excised, and good cosmetic results were achieved in breast reconstruction cases. CONCLUSION: NSM is safe with a low complication rate. No significant difference was observed in cumulative local recurrence rate, cumulative distant disease recurrence rate, and overall survival between patients who underwent NSM or conventional total mastectomy, confirming that NSM was surgically and oncologically safe.
Entities:
Keywords:
Local recurrence; NSM; Nipple-sparing mastectomy; Survival; Total mastectomy
Authors: Artur Bocian; Piotr Kędzierawski; Krzysztof Kurczych; Przemysław Jasnowski; Daniel Maliszewski; Agnieszka Kołacińska Journal: Prz Menopauzalny Date: 2020-10-02