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Arteriovenous Malformations (AVM)


A spectrum of congenital (developmental) blood vessel malformations. An AVM occurs when brain or spinal cord arteries attach directly to veins without the blood passing through the capillary network. AVM's can cause bleeding within the nervous system (a kind of stroke), or progressive neurologic deficits, headaches, or seizures. They occur in a variety of brain locations, sizes, and shapes. Treatment can consist of observation, surgical resection, embolization, or radiosurgery.