The 20 Best Arteriovenous Malformation Doctors Near Me in Tucson, AZ

An arteriovenous malformation occurs when arteries and veins develop in ways that form a tangle. The tangled arteries and veins of arteriovenous malformations also form abnormal connections between them that impair normal blood flow and oxygenation to surrounding tissues. Arteriovenous malformations most commonly form in the brain or spinal cord but may also appear elsewhere in the body. Some types of arteriovenous malformations may resemble birthmarks called hemangiomas or port-wine stains. Arteriovenous malformations can rupture and cause bleeding.