An abnormal connection between arteries and veins that allows blood flow to bypass the small vessels where oxygen and tissue nutrients are exchanged. These unusual malformations may be present at birt [..]

Collection of blood vessels with one or several abnormal communications between arteries and veins which may cause hemorrhage or seizures.

an abnormal, congenital tangle of arteries and veins that are directly connected and lack any intervening capillaries. Such malformations may have no apparent symptoms, but in the brain they can hemor [..]

Collection of blood vessels with one or several abnormal communications between arteries and veins which may cause hemorrhage or seizures.

A "tangle" of blood vessels present from birth which may be prone to bleeding. [Click Here to Return to List]

Abnormal group of dilated blood vessels, most often occurring in the brain.

Abnormal connections between veins and arteries, usually caused by a birth defect.

Abnormal formation of Blood Vessels that shunt arterial Blood directly into Veins without passing through the Capillaries. They usually are crooked, dilated, and with thick vessel walls. A common type [..]

Congenital vascular anomalies in the Brain characterized by direct Communication between an Artery and a Vein without passing through the Capillaries. The locations and size of the shunts determine th [..]

A defect of the circulatory system where arteries and veins become tangled in a mass. Arteries carry oxygen-rich blood away from the heart to the body's cells; veins return oxygen-depleted blood to the lungs and heart. The presence of an AVM disrupts this vital cyclical process. Those located in the brain or spinal cord can have especially wid [..]

A collection of blood vessels with one or more abnormal communications between arteries and veins, which may cause hemorrhage or seizures. More about AVMs.