One thing to add. The measurement of the AAA is not exact. It varies by the radiologist and doctor who does it. In my case my local radiologist and heart doctor show that I am at 4.2 cm for the past 3 years but I also send the scans a Cardiothoracic specialist at a large University hospital in Houston, who has done tons of these procedures and he reads it at 4.5 cm. If/when I need surgery, they are the ones I would go to.