A brain arteriovenous malformation (AVM) is an abnormal tangle of unusually ... uses small tubes placed inside the arteries of the leg and advanced to the neck. Dye is injected through the tube into ...

Spinal vascular malformations, also known as spinal arteriovenous malformations (AVMs), are the result of an abnormal connection between arteries and veins that occurs within the spinal canal or ...

A pulmonary arteriovenous malformation is an abnormal connection between an artery and a vein within the lungs that allows deoxygenated venous blood to pass directly into the system circulation.