Juvenile chronic ulcerative colitis and malignant degeneration.
D000231:Adenocarcinoma, Papillary / Q000150:complications*; D000293:Adolescent; D002908:Chronic Disease; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000150:complications*; D006801:Humans; D008297:Male