Myocardial aneurysm in association with disseminated cytomegalovirus infection.

An infant with disseminated cytomegalovirus infection and apical aneurysm of the left ventricle died. At autopsy the coronary arteries were anatomically normal, but there was occlusion of the left anterior descending artery with an inflammatory lesion and corresponding organized thrombus. It seemed likely that cytomegalovirus infection acquired in utero may have induced an endothelial lesion, leading to thrombosis, occlusion, apical myocardial infarction, and eventual aneurysm formation.