Surgery Anal Malignancy 65c712d6 Margin of clearence for anal carcinoma is- A 2 cm B 3 cm C 4 cm D 5 cm High-Yield Explanation Ans. is 'a' i.e., 2 cm o Wide local excision leaving a margin of at least 2.5 cm of tissue all round with block dissection of the inguinal nodes; If they' are involved.