Overview
Peripheral aneurysm is a bulge in an artery outside your aorta or heart. It’s caused by a weak spot in the artery wall. Most peripheral aneurysms develop behind your knee or in your groin. Some can also appear in the:
- Arteries that serve your abdominal organs
- Arteries of your arm
- Carotid arteries in your neck
Peripheral arteries are less likely to burst than aortic arteries. But, without treatment, they can:
- Break off and move around your body
- Compress surrounding nerves, causing numbness, pain, swelling and tingling
- Develop into blood clots that restrict blood flow
- Increase your risk of stroke (if they develop in the carotid artery)






