The aorta is the main blood vessel that supplies blood to your body. It runs from your heart down through your chest and abdomen.
In some people, as they get older, the wall of the aorta in the abdomen can become weak. It can then start to expand and form an abdominal aortic aneurysm.
The condition is most common in men aged 65 and over. The NHS invites all men for screening in the year they turn 65.
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