Caput medusae sign - developmental venous anomalies

The caput medusae sign, refers to developmental venous anomalies of the brain, where a number of veins drain centrally towards a single drain vein. The appearance is reminiscent of Medusa, a gorgon of Greek mythology, who was encountered and defeated by Perseus.

The sign is seen on both CT and MRI when contrast is administered. Angiographically the caput medusa appearance is seen only in the venous phase.

The caput medusae sign, also known as a palm tree sign, I suppose if there are associated cavernous haemangiomas (making it a mixed vascular malformation) then these could represent dates?

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