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Case 4: Contrast MR brain demonstrating numerous T2 hyperintense lesions involving both the white and gray matter, many of which, but not all, had corresponding complete and incomplete ring enhancement [(A–D), arrows pointing to non-enhancing lesions]. Contrast MR cervical spine demonstrates multiple abnormal T2-hyperintense signal lesions (E) with enhancement (F) of the spinal cord, most prominent at the level of the C2 and C3 vertebrae.
