disease causes dysfunction of heart ventricle ventricular aneurysm disease specific cell type 2014-03-09T16:10:25Z An aneurysm is the outward swelling, or ballooning, of a blood vessel at a weak spot in the wall of the blood vessel. In the case of ventricular aneurysm, the aneurysm occurs in the wall of the heart at the spot where the myocardial infarction occurred. A scar usually forms in the area of the dead muscle tissue, and may eventually calcify. Ventricular aneurysms generally do not rupture. The left ventricle is involved in most cases of ventricular aneurysm. BTO:0005610 BrendaTissueOBO Marion ventricular aneurysm tissue