[Ulcerative colitis. Regular screening for dysplasia].
D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000517:prevention & control*; D003113:Colonoscopy; D006801:Humans; D008403:Mass Screening; D011230:Precancerous Conditions / Q000517:prevention & control*; D012307:Risk Factors