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.

Cavernous malformations, also known as "cavernous angiomas," "cavernous hemangiomas" or just "cavernomas" are clusters of tightly packed abnormal blood vessels surrounded by normal brain tissue.