Ulcerative colitis beginning in childhood.
D000328:Adult; D000367:Age Factors; D002648:Child; D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications* / Q000401:mortality* / Q000601:surgery / Q000628:therapy; D003110:Colonic Neoplasms / Q000209:etiology; D005500:Follow-Up Studies; D006801:Humans; D011379:Prognosis; D013997:Time Factors