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Figure 1: Axial fluid attenuated inversion recovery images (a, b) and coronal T2W images (c, d) show abnormal symmetrical hyper intensities in bilateral post-chiasmatic optic tracts (a), bilateral mamillary bodies (b, d), periaqueductal area (b, d) and in bilateral inferior colliculi (c), Postcontrast T1 sagittal image (e) and coronal T1W image (f), shows homogenous bilateral symmetric enhancement in mamillary bodies and in inferior colliculi

Figure 1: Axial fluid attenuated inversion recovery images (a, b) and coronal T2W images (c, d) show abnormal symmetrical hyper intensities in bilateral post-chiasmatic optic tracts (a), bilateral mamillary bodies (b, d), periaqueductal area (b, d) and in bilateral inferior colliculi (c), Postcontrast T1 sagittal image (e) and coronal T1W image (f), shows homogenous bilateral symmetric enhancement in mamillary bodies and in inferior colliculi