Trends and Outcomes Associated With Axillary Management of Males With Clinical N0 Breast Cancer-An NCDB Analysis.

ABSTRACT Background Sentinel Lymph Node Biopsy (SLNB) is standard of care for women with clinically N0 breast cancer. However, there are no randomized controlled studies in men determining optimal surgical axillary management. Methods Using the National Cancer Database, males diagnosed from 2006-2016 with clinical T1-4 N0 tumors treated with primary surgery were identified and categorized by axillary management. Clinicopathologic variables were compared between two timeframes, 2006-2011 and 2012-2016. Survival analysis was performed. Results We identified 2,646 males meeting criteria. Use of SLNB increased (65.9%-72.8%, P Conclusions Use of SLNB alone has increased while ALND has declined in males with clinically N0 breast cancer. However, patients who underwent SLNB alone in the later time period had worse clinical characteristics and experienced differences in adjuvant therapy. This suggests increased acceptance of the use of SLNB for axillary management. Further analysis is warranted to evaluate methods of axillary staging and the impact on outcomes in males with breast cancer.