title: Metastatic melanoma of the gallbladder.
abstract: We report the findings of a magnetic resonance (MR) imaging analysis of metastatic melanoma of the gallbladder in a 36-year-old woman. MR imaging revealed that the gallbladder wall was diffusely thickened, and the tumor showed slightly high-intensity on T1-weighted images. The apparent diffusion coefficient value of the tumor was 0.69 x 10(-3)mm(2)/s, indicating high cellularity. Surgical specimens revealed that the tumor was a metastatic melanoma showing medullary growth with intratumoral hemorrhaging. These MR findings are helpful for preoperative diagnosis.
authors.affiliation: Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.
authors.forename: Yukihisa
authors.initials: Y
authors.lastname: Takayama
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Asayama
authors.forename: Kengo
authors.initials: K
authors.lastname: Yoshimitsu
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Irie
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Tajima
authors.forename: Masakazu
authors.initials: M
authors.lastname: Hirakawa
authors.forename: Kousei
authors.initials: K
authors.lastname: Ishigami
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kakihara
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sugitani
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Moroi
authors.forename: Takashi
authors.initials: T
authors.lastname: Eguchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Honda
mesh_terms: D000328:Adult; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000556:secondary*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008545:Melanoma / Q000175:diagnosis* / Q000556:secondary*; D012878:Skin Neoplasms / Q000175:diagnosis*