Cancer in ulcerative colitis.
D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications* / Q000601:surgery; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control; D004724:Endoscopy; D006801:Humans; D011230:Precancerous Conditions / Q000175:diagnosis; D012306:Risk