Arteriovenous Malformations

What are Arteriovenous Malformations (AVM)?

Arteriovenous malformations, also called AVM, is a deformity in the connection between your arteries and veins. This abnormal connection circumvents the capillary system.

Symptoms and Diagnosis of Arteriovenous Malformation

Some AVMs don’t cause any symptoms, but may lead to other serious medical problems, such as bleeding, if left untreated.

The most common signs of symptomatic AVM include headache, epilepsy/seizures and hemorrhage. You may also notice:

  • Muscle weakness or paralysis
  • Trouble speaking or communicating
  • Confusion, including hallucinating
  • Memory loss
  • Vertigo

AVMs are usually diagnosed with imaging tests, including:

  • Computerized Tomography (CT) scan
  • Magnetic Resonance Imaging (MRI) scan
  • Magnetic Resonance Angiography

Treatment of Arteriovenous Malformation

Conservative treatment of AVM is typically design to manage its symptoms, such as headache and speech problems. This may involve medications or therapy.

You may also need radiation or surgical therapy for AVM. This may include endovascular embolization, to cut off the blood flow to the AVM.

Next Steps with MyChart

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