Multiple cerebral infarcts associated with an atrial septal aneurysm. Superimposed thrombus detected by transesophageal echocardiography.

The authors describe the case of a patient referred for evaluation of multiinfarct dementia. Conventional echocardiography revealed an aneurysm of the interatrial septum. A transesophageal echocardiogram demonstrated superimposed thrombus. This rare cause of systemic emboli can be diagnosed only by transesophageal echocardiography and is of major interest to avoid recurrence of ischemic strokes.