A left ventricular aneurysm can be caused by a variety of factors: ischemic necrosis of the myocardium regardless of the underlying mechanism, myocarditis, dilated cardiomyopathy, sarcoidosis, syphilis, tuberculosis, AIDS, and thoracic trauma. Congenital or idiopathic aneurysms of the left ventricle also have been observed. We report on a case of left ventricular aneurysm in a 50-year-old woman presenting with typical chest pains. The resting electrocardiogram showed abnormal QS pattern in leads V1-V3. Transthoracic echocardiography revealed a huge aneurysm on the apical posterior wall of the left ventricle. Cardiac spect showed a large fixed infarct area on left and right coronary arteries, but coronary angiography showed perfectly normal coronary arteries. A huge left ventricular aneurysm associated with normal coronary arteries was diagnosed.