After a series of tests, Anne learned she had an aneurysm on an artery near her brain. Further examination revealed that the aneurysm would be risky to treat because it had an unusual shape.
When Nicole Ricci was in her mid-20s, she got the worst headache of her life. The source of the problem was a tangle of blood vessels in Nicole’s brain, known as an arteriovenous malformation (AVM).