Aneurysms

Overview

An aneurysm is a bulge or ballooning in the wall of a blood vessel. An aneurysm can break open. This is called a rupture. A ruptured aneurysm causes bleeding inside the body. It often leads to death. Some aneurysms cause no symptoms. You might not know you have an aneurysm even if it is large.

Aneurysms can form in several parts of the body, including:

• The body's main artery, called the aorta (aortic aneurysm).
• The part of the aorta that passes through the belly area (abdominal aortic aneurysm).
• The part of the aorta that passes through the chest (thoracic aortic aneurysm).
• Blood vessels that send blood to the brain (brain aneurysm).
• Blood vessels in other parts of the body, such as the legs, groin or neck (peripheral aneurysm).

Some small aneurysms have a low risk of rupture. To determine the risk of an aneurysm rupture, a healthcare professional considers:

• Your symptoms.
• Your medical history.
• Your family's medical history.
• The size, shape and location of the aneurysm.

Some people with aneurysms only need regular health checkups and imaging tests. If an aneurysm breaks open, emergency treatment is needed. Treatment may involve open surgery or a less-invasive treatment called endovascular surgery.