Takayama Yukihisa, Asayama Yoshiki, Yoshimitsu Kengo, Irie Hiroyuki, Tajima Tsuyoshi, Hirakawa Masakazu, Ishigami Kousei, Kakihara Daisuke, Sugitani Atsushi, Moroi Yoichi, Eguchi Takashi, Honda Hiroshi
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.
Comput Med Imaging Graph. 2007 Sep;31(6):469-71. doi: 10.1016/j.compmedimag.2007.03.005. Epub 2007 May 22.
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.
我们报告了一名36岁女性胆囊转移性黑色素瘤的磁共振（MR）成像分析结果。MR成像显示胆囊壁弥漫性增厚，肿瘤在T1加权图像上呈稍高信号。肿瘤的表观扩散系数值为0.69×10⁻³mm²/s，提示细胞密度高。手术标本显示肿瘤为转移性黑色素瘤，呈髓样生长并伴有瘤内出血。这些MR表现有助于术前诊断。
