Patient-Level Evaluation of Optimal Margin Width for Lumpectomy in Ductal Carcinoma In Situ: An Analysis of Patients in the National Cancer Database Special Study.
PURPOSE Re-excision for close margins in patients undergoing breast-conserving surgery (BCS) for ductal carcinoma in situ (DCIS) aims to reduce recurrence rates. The current recommended margin width of ≥2 mm is based on study-level data. Using a multicenter cohort, we aimed to determine whether patient-level analysis o...