Pseudoaneurysms of the left ventricle result from myocardial rupture, with clotted blood restrained only by the fibrous pericardium (1–3). There have been occasional reports of pseudoaneurysms of the left ventricle identified by M-mode echocardiography and gated radionuclide blood pool imaging (4–6). Before the use of these noninvasive techniques, the only clinical method to diagnose a left ventricular pseudoaneurysm was left ventriculography (7).
The proper separation of left ventricular pseudoaneurysm from true aneurysm is important because of the greater risk of death in pseudoaneurysm due to rupture (2, 8). We demonstrate here the ability of cross-sectional echocardiography to diagnose a left