title: Primary biliary tract malignant melanoma: US, CT, and MR findings.
abstract: We report a case of primary biliary tract malignant melanoma occurring in a 47-year-old male. Ultrasonography and computed tomography showed multiple masses in the gallbladder and distal common bile duct that caused biliary tract dilatation. Magnetic resonance imaging showed that the polypoid masses in the gallbladder and common bile duct were of low signal intensity on T2-weighted images and of high signal intensity on unenhanced T1-weighted images.
authors.affiliation: UDIAT-CD, Corporació Parc Taulí, Parc Taulí s/n, 08208 Sabadell, Barcelona, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Medina
authors.forename: A
authors.initials: A
authors.lastname: Darnell
authors.forename: N
authors.initials: N
authors.lastname: Bejarano
authors.forename: J
authors.initials: J
authors.lastname: Falcó
authors.forename: E
authors.initials: E
authors.lastname: Musulen
authors.forename: J
authors.initials: J
authors.lastname: Martin
mesh_terms: D003138:Common Bile Duct Neoplasms / Q000175:diagnosis*; D005706:Gallbladder Neoplasms / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed