A 57-year-old woman presented with classic exertional angina and was then discovered to have a rare coronary anomaly in which the left coronary artery originated from the right sinus of Valsalva. The diagnosis was made by coronary angiography and confirmed with computed tomography (CT). The patient then underwent surgical revascularization with complete reso lution of symptoms. The course of the aberrant artery between the aorta and pulmonary artery/right ventricular outflow tract was confirmed by gated thin-slice CT angiography with bolus contrast injection. To the authors' knowledge, this is the first case report where CT was used to confirm this diagnosis.
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