Medical Equipment Glossary

An aneurysm is a medical term for a blood vessel abnormality characterized by a weakening of the wall of an artery. This abnormality leads to a progressive “ballooning” of the vessel wall, which forms a sac filled with blood. An aneurysm can occur in many arteries in the body. Those which occur in the blood vessels of the head which supply blood to the brain are known as cerebral aneurysms.