Vein of Galen Aneurysmal Malformation

Vein of Galen aneurysmal malformation (VGAM) is a rare vascular malformation involving the embryonic precursor to the vein of Galen. “Vein of Galen malformation” is reported to represent fewer than l% of all arteriovenous malformations (AVMs). VGAD is a group of malformations that drain pial or dural shunts into the true vein of Galen or its tributary associated with dilatation of the vein of Galen. The arteriovenous fistula (AVF) in VGAM can be single or multiple. Arterial anastomoses between feeding pedicles are often seen. Two subtypes of VGAM, choroidal and mural, can be distinguished.