[Complication of ulcerative colitis and its prevention].
D000328:Adult; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000209:etiology*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008532:Megacolon, Toxic / Q000209:etiology; D008875:Middle Aged