What is it?

This refers to a swelling of the artery in the body. This commonly affects the artery in the abdomen(tummy) thus called an Abdominal Aortic Aneurysm (AAA). It can also affect the artery in your chest (Thoracic aneurysm), behind the knee (Popliteal aneurysm) but can also affect any other vessel in your artery. The rest of the discussion will be on abdominal aortic aneurysms.