Figure 1. Brain MRI before and after first plasmapheresis. (a) Abnormal T2/FLAIR signal in bilateral cerebellar hemispheres, (b) post-contrast study performed at the same time as (a) showing lack of contrast enhancement, (c) resolution of previously seen signal abnormality in the cerebellum, and (d) post-contrast study performed at the same time as (c) with no change. MRI: magnetic resonance imaging; T2/FLAIR: T2-fluid-attenuated inversion recovery sequence.