Fig. 1From: A rare case of rectal cancer with perianal metastasis: a case reporta Colonoscopy revealed a type 2 tumor at the recto-sigmoid colon. b The surgically resected rectal specimen showed columnar or polygonal cells with hyperchromatic nuclei proliferating in tubular and cribriform patterns. Well-differentiated tubular adenocarcinoma was diagnosedBack to article page