Anal carcinoma is most commonly of type?: (A) Adenocarcinoma, (B) Epidermoid, (C) Mixed, (D) None of the above
Answer is B. Epidermoid carcinoma of the anus includes squamous cell carcinoma, cloacogenic carcinoma, transitional carcinoma and basaloid carcinoma. The clinical behaviour and natural history of these tumors is similar. Ref: Schwaz 9/e, Page 1053; Maingot's 10/e, Page 1505.