Abstract
Purpose
For many women, nipple-sparing mastectomy (NSM) provides aesthetic and quality-of-life outcomes superior to skin-sparing mastectomy. Accumulating data suggest that NSM provides similar oncologic outcomes in select breast cancer patients. This study sought to determine national trends in NSM use.
Methods
Using the National Cancer Data Base, 6254 women with breast cancer who underwent NSM between 2010 and 2013 were identified. NSM rates were determined relative to the number of patients who received a mastectomy with reconstruction (n = 114,849). Associations between patient, tumor, and facility characteristics and NSM were assessed using logistic regression.
Results
The rate of NSM increased from 2.9 to 8.0 % between 2010 and 2013. NSM was most commonly performed in academic (adjusted odds ratio [OR] 1.43, p < 0.001) and high-volume (OR 1.59, p < 0.001) breast centers. There was up to a 5.8-fold variation in its delivery between geographic census regions (p < 0.001). Of 1231 hospitals, only 491 (39.9 %) reported performing at least one NSM during the study period. Half of all NSMs were performed by the top 6 % (n = 30) of NSM-performing centers. NSM was associated with small tumor size (p < 0.001), lower tumor grades (p < 0.05), and negative nodal status (p < 0.001). However, half of NSM patients had at least one tumor characteristic that diverged from current (2016) NCCN recommendations for the procedure.
Conclusions
The use of therapeutic NSM is increasing dramatically in the United States, despite recommendations that the procedure be used with caution. As NSM becomes increasingly common, efforts are needed to monitor its long-term oncologic outcomes and to ensure equitable access to it.
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Author contributions
Sisco: Conceptualization, methodology, original draft, Kyrillos: Formal analysis, data curation, original draft, Lapin: Methodology, software, validation, formal analysis, resources, data curation, review and editing, visualization, Wang: Methodology, software, validation, formal analysis, resources, data curation, review and editing, visualization, Yao: Conceptualization, methodology, review and editing.
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The data used in this study are derived from a de-identified National Cancer Data Base file. The American Cancer Society and American College of Surgeons Commission on Cancer have not verified and are neither responsible for the analytic or statistical methodology employed, nor the conclusions drawn by these investigators from the data.
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Sisco, M., Kyrillos, A.M., Lapin, B.R. et al. Trends and variation in the use of nipple-sparing mastectomy for breast cancer in the United States. Breast Cancer Res Treat 160, 111–120 (2016). https://doi.org/10.1007/s10549-016-3975-9
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DOI: https://doi.org/10.1007/s10549-016-3975-9