An aortic aneurysm occurs when a weak aortic wall stretches, causing it to bulge. An aortic dissection occurs when there’s a tear in the aortic wall, which can be fatal if not treated immediately. The ...

People who developed a type of aneurysm with a cervical artery dissection (a tear in the inner lining of the neck artery wall), a known cause of stroke, particularly in young adults, did not have an ...