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Demyelinating lesions around developmental venous anomalies with enhancement. A, A coronal contrast-enhanced T1 sequence shows a superficially draining right cerebellar DVA (arrow) associated with enhancing parenchymal lesions. This was biopsy-proved demyelination. B, An axial contrast-enhanced T1 sequence shows a left frontal lobe DVA (arrow) with surrounding T1 hypointensity and discontinuous peripheral enhancement, typical of demyelination in a patient with MS.
