What is Carotid Artery Stenosis?
The carotid arteries, located in the neck, are the major source of oxygen-rich blood flow to the brain. Carotid artery stenosis (CAS) occurs when these arteries become thick and more narrow, hence cutting off some of this necessary blood supply. While mild carotid artery stenosis occurs in most people as they age, the greater the blockage, the more chance that those affected will suffer a stroke or a transient ischemic attack (mini-stroke).
