Vein of Galen malformations (VOGM) are rare intracranial circulation defects and account for ~1% of intracranial vascular malformation. VOGM is composed of two internal cerebral vein and draining into the straight sinus 1.
VOGM is the result of an arteriovenous communication between the arterial network and prosencephalic vein. It occurs between 6th and 11 weeks of intrauterine life 2,3.