Fig. 7From: Angiographic analysis on posterior fossa hemorrhages and vascular malformations beyond aneurysms by CT angiography and digital subtraction angiographyDevelopmental venous anomaly (DVA) or venous angioma; DSA image in AP view showing ‘medusa head’ appearance (white arrow) of medullary veins with early dilated draining vein into torculaBack to article page