Carcinoma of the biliary tract associated with ulcerative colitis.
D001660:Biliary Tract Diseases / Q000150:complications*; D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications* / Q000601:surgery; D005770:Gastrointestinal Neoplasms / Q000150:complications*; D006801:Humans