[Impact of preoperative 64-row multislice computed tomography for congenital aortic stenosis; report of a case].

A 63-year-old woman was diagnosed as having severe aortic stenosis (AS) with 98 mmHg peak pressure gradient detected by echocardiography. Since, preoperative enhanced 64-row multislice computed tomography (MSCT) showed bicuspid aortic valve with only 2 sinuses of Valsalva, congenital aortic stenosis was suspected. The left and right coronary arteries originated from respective sinus of Valsalva, and severely thickened cusps of aortic valve were detected clearly by preoperative 64-row MSCT. Aortic valve replacement with a 21 mm ATS mechanical bileaflet prosthesis was performed without aortic annulus enlargement. The postoperative course was uneventful and postoperative 64-row MSCT indicated good performance of the ATS valve. Preoperative 64-row MSCT could be useful to detect complex aortic valve disease in detail. Moreover. 64-row MSCT might be a reliable tool to evaluate valvular heart disease.