The abdominal Aorta is the largest blood vessel in the body and runs mid-line just left of your spine. It may becomes enlarged due to hypertension or hardening of the vessel walls. This can lead to leakage or rupture, and is called an Abdominal Aortic Aneurysm (AAA). This will lead to a life-threatening medical emergency. Hypertension, smoking and high cholesterol are leading causes of AAA.