title: Ultrasonic diagnosis of metastatic melanoma of the gallbladder presenting as acute cholecystitis.
mesh_terms: D000208:Acute Disease; D002764:Cholecystitis / Q000175:diagnosis* / Q000209:etiology; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000556:secondary; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000556:secondary; D008875:Middle Aged; D014463:Ultrasonography