Treatment depends on aneurysm size. In general, small aneurysms (between 3.0 and 5.0 centimetres) do not need to be treated but they do need to be routinely monitored as they may increase in size. An aneurysm of 5.5cm or greater should be considered for repair. This may be performed by the standard open surgical operation or more commonly by a less invasive method known as an Endovascular Aortic Repair (EVAR). The technique choosen for each patient is based on their individual anatomy and their general health.
The mortality risk with EVAR is approximately half that of open surgery. However over time leaks may develop due to changes in the aortic anatomy. As a result patients need life-time follow-up ultrasound scans to ensure that the graft continues to function properly and that no leaks have developed.