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Background
The primary objective was evaluation of axillary ultrasound (AxUS) in preoperative staging of patients with invasive carcinoma undergoing breast‐conserving surgery.
Methods
This is a retrospective, observational cohort study of patients with clinically node‐negative (cN0) biopsy‐proven invasive breast carcinoma undergoing breast‐conserving surgery between January 2011 and December 2014...