Cerebral Arteriovenous Malformations (AVM) are the most common type of intracranial vascular malformation and are the second most common cause (after cerebral aneurysms) of intracranial hemorrhage. Anatomically, AVM is a set of embryologically immature and fragile vessels, located in brain tissue. Hemodynamically it constitutes a system of low pressure of turbulent flow that wears the involved dysplastic vessels, of there its tendency to break up and to bleed.