Featuring Demian Dressler, DVM and Susan Ettinger, DVM, Dip. ACVIM (Oncology), authors of The Dog Cancer Survival Guide

Wide Margin Definition

Wide margin: Margins of at least two to three centimeters (sometimes more, and sometimes less, depending upon the case) that surrounded the cancer and were removed from the body during a biopsy or other surgery. Malignant tumors are more likely to recur if they are removed with narrow margins, so wide margins, if possible, are preferred.

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