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Pericallosal moustache

Dr Yuranga Weerakkody and Dr Frank Gaillard et al.

The pericallosal moustache is formed by small branches from the pericallosal arteries and their accompanying veins. These form what appears to be an upturned poorly groomed moustache (unlike Salvador Dali) and outline the superior surface of the corpus callosum (pericallosal cistern).