ANDERS PERSSON, CMIV / SCIENCE PHOTO LIBRARY ANDERS PERSSON, CMIV / SCIENCE PHOTO LIBRARY
Aortic aneurysm. Computed tomography (CT) scan of a large swelling (aneurysm) in a human's abdominal aorta. The aorta is the body's main artery. It arches over the heart and descends to the abdomen. The bones of the spine and pelvis are also shown. An aneurysm is a weakening of the walls of a blood vessel, leading to swelling and rupture. In the aorta, such rupturing is swiftly fatal. If the condition is detected before rupture, surgery is needed to repair the aorta and implant a stent to strengthen its walls.
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