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Hyperintensities in patient with negative serum studies but isolated positive MOG IgG in the CSF (MRI)

Axial T2 FLAIR sequence MRI (A) showing bithalamic hyperintensities (arrows), the FLAIR hyperintensities are also scattered throughout the supra- (arrowheads) and infratentorial areas (not demonstrated) in a patient with negative serum studies but isolated positive MOG IgG in the CSF. (B) T1 post-contrast sequence from the same patient with correlated T1 hypointensities (arrows) without associated enhancement. (Contributed by Dr. Lama Abdel Wahed.)

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