Among many cardiac diseases related to cerebral stroke, left ventricular thrombus formation due to silent myocardial infarction with normal coronary arteries represents a rare cause of cerebral ischemia. We describe an unusual case of cerebral ischemia due to cardiac thrombus formation in a young patient with silent myocardial infarction and normal coronary arteries in which echocardiography and cardiac MR imaging clearly showed the embolic source.