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Clockwise from top left: Coronal MRI post-contrast with mamillary body enhancement (box) (a), sagittal FLAIR with mamillary body (arrow) and periaqueductal gray matter (box) hyperintensity(b), coronal FLAIR with bilateral thalamic (arrows) hyperintensity(c), and axial diffusion restriction of the periaqueductal gray matter (box) (d).
