[A rare constellation of findings: bile duct cancer, ulcerative colitis, deep venous thrombosis of the leg].

A case of a 28-year-old patient with long-standing chronic ulcerative colitis is presented, in whom cholangiocarcinoma was diagnosed by CT and ultrasound guided liver biopsy. This association is well known, because the incidence of bile duct carcinoma in patients with chronic ulcerative colitis is increased. A possible precursor of the disease is thought to be primary sclerosing cholangitis which also more frequently occurs in patients with ulcerative colitis. Our patient was initially hospitalized for deep venous thrombosis, which in retrospect had to be interpreted as a paraneoplastic syndrome.