Yoshioka H, Itai Y, Niitsu M, Fujiwara M, Watanabe T, Satomi H, Otsuka F
Department of Radiology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
Skeletal Radiol. 1999 Dec;28(12):714-6. doi: 10.1007/s002560050579.
We present a rare case of intramuscular metastasis from malignant melanoma. The lesion showed intermediate to high signal intensity on T1-weighted magnetic resonance (MR) images and mixed signal intensities containing high and low signals on T2-weighted images. The signal intensity on T1-weighted images, which is due to the paramagnetic effect of melanin, is a characteristic MR finding of this entity.
我们报告一例罕见的恶性黑色素瘤肌内转移病例。该病变在T1加权磁共振（MR）图像上呈中等至高信号强度，在T2加权图像上呈包含高信号和低信号的混合信号强度。T1加权图像上的信号强度归因于黑色素的顺磁效应，是该病变的特征性MR表现。
