Cerebral embolism and thrombus in a membranous interventricular septal aneurysm.

This report describes the occurrence of a thrombus in an aneurysm of the membranous interventricular septum with cerebral embolism in a young patient. We would recommend periodic echocardiography checkups in patients with aneurysm of the membranous interventricular septum with or without a small ventricular septal defect. The findings of a mass in the aneurysm, suggestive of thrombus, may justify anticoagulation treatment or even surgical intervention.