Arteriovenous malformation

Arteriovenous malformation or AVM is a congenital disorder of the connections between veins and arteries in the vascular system. The genetic transmission patterns of AVM (if any) are unknown, and AVM is not generally thought to be an inherited disorder--unless in the context of a specific hereditary syndrome.
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Arteriovenous malformation An abnormal tangle of arteries and veins in which the arteries feed directly into the veins without a normal intervening [more]Arteriovenous malformation - Community and Resources