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Arteriovenous Malformation

An arteriovenous malformation (AVM) occurs when a group of blood vessels forms incorrectly. Arteries and veins are tangled (as on the right of this image) and may not supply blood properly to brain tissue.

Arteriovenous malformations (AVMs) are very rare. They occur when a group of blood vessels forms incorrectly, usually before birth or shortly after. Arteries and veins are unusually tangled and may not supply blood properly to brain tissue. Most people with AVMs have no symptoms. Sometimes AVMs are discovered when doctors treat other unrelated health problems and perform imaging tests.

Symptoms that do occur can include a rushing sound in the ears, headache, backache, seizures, muscle weakness, vision changes, problems speaking and dizziness. Of concern is AVM rupture and related bleeding (hemorrhage), a rare but potentially fatal condition. Patients with a suspected AVM require expert diagnosis and treatment, which may include endovascular embolization, surgical resection and Gamma Knife radiosurgery.

Virtual Visits Are Available

Safe and convenient virtual visits by video let you get the care you need via a mobile device, tablet or computer wherever you are. We'll assess your condition and develop a treatment plan right away. To schedule a virtual visit, call 414-805-3666.

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Recognized as High Performing by U.S. News & World Report

Froedtert Hospital is nationally ranked in three adult specialties by U.S. News & World Report. Froedtert Hospital is also recognized as high performing in four adult specialties and 14 procedures and conditions, including stroke care. Learn more.