Biliary tract melanoma.

A case of melanoma of the upper extremity with a solitary metastasis to the common bile duct is reported. A comprehensive review of melanoma in the biliary tree is presented. Antemortem diagnoses of such cases are rare but are associated with a high percentage of disease clinically confined to the biliary tree. Patients with such lesions have survived long periods of time after palliative surgery. Therefore, surgical resection is recommended as the treatment of choice in patients able to tolerate surgery.