Metastatic melanoma in the biliary tree.
D000368:Aged; D003138:Common Bile Duct Neoplasms / Q000175:diagnosis / Q000556:secondary*; D005706:Gallbladder Neoplasms / Q000175:diagnosis / Q000556:secondary*; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis / Q000556:secondary*; D014463:Ultrasonography