Metastatic melanoma of the gallbladder.
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.
Takayama
Yukihisa
Y
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.
Asayama
Yoshiki
Y
Yoshimitsu
Kengo
K
Irie
Hiroyuki
H
Tajima
Tsuyoshi
T
Hirakawa
Masakazu
M
Ishigami
Kousei
K
Kakihara
Daisuke
D
Sugitani
Atsushi
A
Moroi
Yoichi
Y
Eguchi
Takashi
T
Honda
Hiroshi
H
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*