Abdominal aortic aneurysm involves a widening, stretching, or ballooning of the aorta. There are several causes of abdominal aortic aneurysm, but the most common results from atherosclerotic disease. As the aorta gets progressively larger over time there is increased chance of rupture.

Review Date: 3/23/2001 12:00:00 AM Reviewed By:A.D.A.M. Medical Illustration Team

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