Fig 3.

A, Sagittal FLAIR MR imaging shows multiple hyperintense callosal and pericallosal multiple sclerosis plaques (Dawson fingers; arrow) B, Axial T2 MR imaging shows a hyperintense left middle cerebellar peduncle lesion (midline arrow) associated with a flow void (central vein sign; left lateral arrow), which extends from the DVA better demonstrated in image C. C and D, Axial contrast-enhanced T1 MR images show an enhancing left middle cerebellar peduncle lesion (midline arrow) closely associated with a left cerebellar DVA (left lateral arrow). This enhancement was resolved on the follow-up scan at the same anatomic level 2 years later (D, arrow).