Figure 1: Brain MRI shows diffuse bilateral symmetric high signal intensities in white matter including the brain stem, cerebellar peduncle, internal capsule, corpus callosum on diffusion-weighted images (DWI) (1-A,B) and low signal intensities on the apparent diffusion coefficient map (1-C,D). Fluid-attenuated inversion recovery (FLAIR) (2-A, B, C) demonstrates high signal intensities in the same areas.