50-year-old patient presented with visual disturbance and left sided weakness.
CSF PCR was positive for VZV.
MRI showed multiple left MCA territory infarcts.
There wasthick eccentric enhancement on the right MCA but no stenosis initially.
After 5 months and following steroid therapy, the enhancement associated with the vasculopathy regressed but a severe long segment stenosis developed. This only slightly improved (trace of flow related signal) on further follow-up MRA (not shown).