Abstract
Background
Nipple-sparing mastectomy (NSM) is increasingly used in women with breast cancer who are not eligible for conservative surgery, but extensive outcome data are lacking and indications have not been established.
Objective
The aim of this study was to assess the oncological outcomes of NSM in a large series of patients with invasive or in situ breast cancer treated at a single center.
Methods
We analyzed 1989 consecutive women who had an NSM in 2003–2011, for invasive (1711 patients) or in situ cancer (278 patients) at the European Institute of Oncology, Italy, and followed-up to December 2016. Endpoints were local recurrences, recurrences in the nipple-areola complex (NAC), NAC necrosis, and overall survival (OS).
Results
After a median follow-up of 94 months (interquartile range 70–117), 91/1711 (5.3%) patients with invasive cancer had local recurrence (4.8% invasive disease, 0.5% in situ disease), and 11/278 (4.0%) patients with in situ disease had local recurrence (1.8% invasive disease, 2.2% in situ disease). Thirty-six (1.8%) patients had NAC recurrence, 9 with in situ disease (4 invasive and 5 in situ recurrences), and 27 with invasive disease (18 invasive and 9 in situ recurrences). NAC loss for necrosis occurred in 66 (3.3%) patients. There were 131 (6.6%) deaths, 109 (5.5%) as a result of breast cancer. OS at 5 years was 96.1% in women with invasive cancer and 99.2% in women with in situ disease.
Conclusions
The findings in this large series, with a median follow-up of nearly 8 years, indicate that NSM is oncologically safe for selected patients. The rate of NAC loss was acceptably low.
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Acknowledgment
The authors thank Maria Grazia Villardita for help with manuscript preparation, and Don Ward for help with the English.
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No financial support was received for this study.
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Viviana Galimberti, Consuelo Morigi, Vincenzo Bagnardi, Giovanni Corso, Elisa Vicini, Sabrina Kahler Ribeiro Fontana, Paola Naninato, Silvia Ratini, Francesca Magnoni, Antonio Toesca, Andriana Kouloura, Mario Rietjens, Francesca De Lorenzi, Andrea Vingiani, and Paolo Veronesi have no conflicts of interest to declare.
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Galimberti, V., Morigi, C., Bagnardi, V. et al. Oncological Outcomes of Nipple-Sparing Mastectomy: A Single-Center Experience of 1989 Patients. Ann Surg Oncol 25, 3849–3857 (2018). https://doi.org/10.1245/s10434-018-6759-0
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DOI: https://doi.org/10.1245/s10434-018-6759-0