Rectal conservation in the surgical treatment of ulcerative colitis.
D003082:Colectomy / Q000379:methods; D003093:Colitis, Ulcerative / Q000601:surgery*; D006801:Humans; D007081:Ileostomy / Q000379:methods; D011183:Postoperative Complications / Q000401:mortality; D012004:Rectal Neoplasms / Q000209:etiology; D012007:Rectum / Q000601:surgery*