This Week’s Question: Aneurysms are pretty scary things. Do they have any symptoms?

Aneurysms are artery bulges. And, yes, they are scary because, if they burst, they are lethal. Many victims of a ruptured  aneurysm die before they get to a hospital.

The type and location of the aneurysm will determine the symptoms.

Chest aortic aneurysms, which occur in the large blood vessel (aorta)that carries blood from the heart to other parts of the body, may causeshortness of breath, a raspy voice, backache, or shoulder pain.

Abdominal aortic aneurysms may cause pain or tenderness below your stomach, make you less hungry, or give you an upset stomach.

Cerebral aneurysms may produce headaches, pain in your neck and face,or trouble seeing and talking.

Ventricular aneurysms in the heart's main pumping chamber (the left

ventricle) may cause shortness of breath, chest pain, or an irregularheart beat.

Fortunately, aneurysms can be detected by a physical examination, x-ray, ultrasound and modern imaging systems such as a CAT scan or an MRI.

The size and location of the aneurysm determines the treatment method. For example, aneurysms in the upper chest are usually operated on immediately.

Aneurysms in the lower chest and the area below your stomach are watched at first. If they grow too large or cause symptoms, surgery may be required.

The standard treatment for aneurysm once it meets the indications forsurgery is replacement of that weakened portion of the aorta with an artificial graft. Usually, a graft made from Dacron, a material that will not wear out, is used.

In recent years, a treatment has been developed to repair an aneurysmusing less-invasive surgery. In the procedure, a stent-graft made of a polyester tube inside a metal cylinder is inserted into the bloodstream at the end of a catheter. The stent-graft is positioned to carry the blood flow instead of the aneurysm.

The following increase the risk of getting an aneurysm: being older than 60, plaque in the arteries (atherosclerosis), high blood pressure, smoking, injuries or infections of the blood vessels, a congenital abnormality, and inherited diseases.

Most aneurysms are caused by a breakdown in the proteins that providethe structural strength to the wall of the aorta. These proteins can gradually deteriorate with age. But inflammation that is associated withatherosclerosis can accelerate this process. There are also naturally occurring enzymes that cause the breakdown of the proteins. An excess ofthese enzymes or other conditions that activate these enzymes may also contribute to the formation of an aneurysm, or its sudden growth. In rare cases an aneurysm may be caused by infection.

The combination of early diagnosis with safer, simpler, and ever moresuccessful treatments can prevent needless deaths due to ruptured aneurysms.

If you think you or one of your family members might have an aortic aneurysm, see a doctor without delay.

The Healthy Geezer column publishes each Monday on LiveScience. If you would like to ask a question, please writefred@healthygeezer.com. © 2010 by Fred Cicetti.