Aneurysms

Overview

There are two major types of aneurysms: aortic aneurysms, which occur in the major artery that carries blood from the heart, and cerebral aneurysms, which occur in an artery in the brain. Mayo Clinic specialists have extensive experience in the diagnosis and treatment of all types of aneurysms.

Many aneurysms can now be treated without major surgery. Mayo physicians have helped pioneer the development of minimally invasive techniques that reduce recovery time and hospitalization. Recent research led by Mayo Clinic has also shed new light on when an aneurysm is best treated and when it is best left alone and closely monitored for changes.

See Aortic Aneurysm Treatment

See Cerebral Aneurysm Treatment

About Aneurysms

An aneurysm is an abnormal bulge in an artery caused by a weakening of the artery's wall. Some aneurysms are caused by atherosclerosis (hardening of the arteries), the buildup of cholesterol and other fatty deposits, and hypertension (high blood pressure). Other aneurysms are caused by injury, infection or an inherited blood vessel weakness. Aneurysms can occur in any blood vessel, but they occur most often in the abdominal aorta and the cerebrum (brain).

An aneurysm can be life-threatening if it grows large enough to rupture. A ruptured aneurysm produces internal bleeding, which can be fatal or cause serious complications.