Left optic neuritis. There are multiple, greater than 10, foci of high T2 signal in the supratentorial and infratentorial white matter. Many of the lesions display T1 hypointensity, but do not enhance. There may also be high T2 signal lesions in the bilateral intraorbital optic nerves versus volume averaging, but the sequences are not optimized for evaluation of this anatomy. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Findings compatible with supratentorial and infratentorial demyelinating lesions, but no evidence of active inflammation. There may be demyelinating lesions in the bilateral intraorbital optic nerves versus volume averaging, but the sequences are not optimized for evaluation of this anatomy. 