Oncologic Safety of Nipple-Sparing Mastectomy in Patients with Breast Cancer and Tumor-to-Nipple Distance <= 1 cm: A Matched Cohort Study
- Background A short tumor-to-nipple distance (TND) is reported as a strong predictor of nipple-areola complex (NAC) involvement. Eligibility for nipple-sparing mastectomy (NSM) remains controversial, especially regarding TND. In this study, we compared long-term oncologic outcomes after NSM between patients with a TND <= 1 cm and those with a TND > 1 cm. Methods Overall, 1369 patients with primary breast cancer who underwent NSM with immediate reconstruction from March 2003 to December 2015 were included for analysis. After propensity score matching, 495 patients with a TND <= 1 cm (group A) and 495 patients with a TND > 1 cm (group B) on imaging were selected to compare long-term oncologic outcomes. Results After matching, the median follow-up periods for surviving patients were 109 months and 112 months for groups A and B, respectively. There were no significant differences between groups with respect to the 5-year cumulative local recurrence (8.1% vs. 6.3%; p = 0.268), NAC recurrence (5.1% vs. 2.8%; p = 0.072), regional recurrence (2.0% vs. 3.6%; p = 0.125), or distant recurrence (5.9% vs. 4.8%; p = 0.480) rates. Furthermore, no significant differences were observed between the groups with respect to the 10-year local recurrence-free survival (87.1% vs. 90.7%; p = 0.164) or disease-free survival (77.9% vs. 81.6%; p = 0.222) rates. Conclusions A preoperative TND <= 1 cm on imaging should not be contraindicated to NSM as long as there is no involvement of NAC clinically or on imaging and if retroareolar margins are confirmed to be negative for tumor cells.
- 고범석; 공경엽; 김성배; 김지선; 김학희; 김희정; 손병호; 안세현; 엄진섭; 이새별; 이종원; 정경해; 정일용; 한현호; Jing Han; Zhen-Yu Wu
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- Breast cancer; Breast Oncology; Cancer patients; Care and treatment; Medicine; Medicine & Public Health; Oncology; Safety and security measures; Surgery; Surgical Oncology
- ANNALS OF SURGICAL ONCOLOGY
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