Glossary of Terms
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- arteriovenous malformation (AVM)
- An abnormal communication between an artery and vein that may be present at birth or may result from injury or infection. Blood may flow directly from the artery to the vein, bypassing the small vessels where oxygen and tissue nutrients are exchanged. These unusual malformations are often found in the brain and spinal cord, but may occur anywhere in the body.
- A tangle of dilated blood vessels that disrupts normal blood flow in the brain.
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