Reexcision Surgery for Breast Cancer: An Analysis of the American Society of Breast Surgeons (ASBrS) MasterySM Database Following the SSO-ASTRO “No Ink on Tumor” Guidelines

Background In February 2014 , the Society of Surgical Oncology and the American Society for Radiation Oncology released guidelines standardizing a negative margin after breast-conserving surgery (BCS) as “no ink on tumor” in patients with early-stage invasive cancer. We sought to determine whether reexcision rates after initial BCS decreased after guideline publication, using the ASBrS MasterySM of Breast Surgery Program.