Claustrum hyperintensity as a marker of anti-NMDAR encephalitis

A young adult male patient presented with subacute onset, rapidly progressive cognitive impairment and refractory seizures and was diagnosed as definite anti N-methyl D-aspartate receptor (anti-NMDAR) antibody encephalitis as per criteria by Graus et al. (2016), following detection of culprit autoantibodies in serum.1 MRI of brain revealed bilateral T2-weighted image (T2WI)/fluid-attenuated inversion recovery (FLAIR) claustrum hyperintensities...