Should New “No Ink On Tumor” Lumpectomy Margin Guidelines be Applied to Ductal Carcinoma In Situ (DCIS)? A Retrospective Review Using Shaved Cavity Margins

Background No consensus exists for clear margins for breast-conserving surgery for pure ductal carcinoma in situ (DCIS). We examined the implications of applying a “no ink on tumor” standard for pure DCIS by correlating clear margin width with rates of residual disease.