Dysplasia, precancer, and ulcerative colitis.
D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000150:complications / Q000601:surgery*; D006801:Humans; D011230:Precancerous Conditions / Q000150:complications / Q000601:surgery*