Cancer risk in ulcerative colitis: surveillance or surgery.
D000328:Adult; D000367:Age Factors; D000368:Aged; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000209:etiology*; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D011230:Precancerous Conditions / Q000175:diagnosis; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000209:etiology*; D012306:Risk