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Intramuscular metastasis from malignant melanoma: MR findings
1Department of Radiology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
Skeletal Radiology
|February 1, 2000
Abstract:
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.