Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs AneurysmUpdated: 2020-02-06OverviewAn aneurysm is a weakened area in an artery that balloons out. Aneurysms often occur in the aorta, brain, back of the knee, intestine, or spleen. A ruptured aneurysm can result in death.SymptomsSigns and symptoms depend on the size and location of the aneurysm.TreatmentsTreatment varies from watchful waiting to emergency surgery. The choice depends on the location, size, and condition of the aneurysm. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use