An abdominal aortic aneurysm is an aneurysm (blood vessel rupture) in the part of the aorta that passes through the belly (abdomen). Abdominal aortic aneurysms usually do not have symptoms, but a pulsating sensation in the abdomen and/or the back has been described. Abdominal aortic aneurysms are fairly common and can be life-threatening if not treated immediately.
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