Routine resection of cavity shave margins (additional tissue circumferentially around the cavity left by partial mastectomy) may reduce the rates of positive margins (margins positive for tumor) and reexcision among patients undergoing partial mastectomy for breast cancer. Anees B. Chagpar is the Director of The Breast Center, Smilow Cancer Hospital at Yale-New Haven, an Associate Professor in the Department of Surgery, Yale School of Medicine, the Program Director of the Interdisciplinary Breast Fellowship at Yale University, and the Assistant Director for Global Oncology at Yale Comprehensive Cancer Center.

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