AAA. Dilation of aorta usually due to atherosclerosis, and >90% originate below the renal arteries. The aneurysms aretypically asymptomatic until they rupture, but patients may complain of lower back or hypogastric pain. The aneurysmsmay be associated with emboli to the feet and kidneys. Normal diameter of the aorta is 4.5 cm, repair is generally suggested. Risk of rupture is 1 to 2% over 5 years when the AAA is read more