A balloon-like swelling in the wall of the aorta within the abdomen. This swelling weakens the aorta's wall and, because of the great volume of blood flowing under high pressure in the aorta, it can rupture. An abdominal aortic aneurysm is monitored by ultrasound. Surgery is often recommended if the aneurysm is more than 5.5 centimeters (2.2 i [..]

Sometimes called triple A. A ballooning out of a segment of artery caused by disease or weakness in the vessel wall (called an aneurysm) that occurs in the portion of the aorta that runs through the a [..]

An abdominal aortic aneurysm is defined as any enlargement of the abdominal aorta - the main artery running through the abdomen. Most abdominal aortic aneurysms are small and do not pose a health prob [..]

An abnormal balloon- or sac-like Dilatation in the wall of the Abdominal Aorta which gives rise to the visceral, the parietal, and the terminal (iliac) branches below the aortic hiatus at the Diaphrag [..]

<surgery> A distended and weakened area in the wall of the abdominal aorta, more common in those who suffer from atherosclerosis. Symptoms include sudden, severe abdominal pain with radiation to the back. (27 Sep 1997)