(A and B) Stealth MRI brain protocol demonstrates the presence of scattered patchy and confluent foci of FLAIR hyperintensity and abnormal subcortical white matter enhancement predominantly in cerebral hemispheres (arrows in (A)), but also involving the corpus callosum, basal ganglia bilaterally (arrows in (B)), the right anteromedial thalamus, middle cerebellar peduncles, subcortical white matter in the cerebellar hemispheres and the medulla. These findings were suggestive of Primary Angiitis of the Central Nervous System (PACNS) in the absence of an underlying systemic vasculitis.