Collaborative Hypertext of Radiology

venous angioma

"caput medusae"
wedge-shaped appearance with its base at the meninges and its apex directed toward the ventricles
prominent medullary vein drains into a markedly enlarged transcortical cerebral vein
angiogram: normal arterial phase without AV shunting

Brian Funaki, MD - 2 February 1995
Last updated: 1 October 2013