Fig. 3From: Total proctocolectomy with end ileostomy for acute onset of ulcerative colitis during chemoradiotherapy for lung adenocarcinoma (successfully treated by surgery): a case reportColonoscopy images. a Colonoscopy revealing extensive ulceration of the mucosa. The surface is irregular and erythematous with loss of the normal vascular markings. b Extensive pseudopolyps in the rectumBack to article page