An unusual congenital coronary anomaly: origin of the left circumflex coronary artery from a right coronary artery arising from the left sinus of valsalva.

A 54-year-old male was admitted to our department for stable angina. Coronary angiography and 16-slice computed tomography revealed an abnormal origin of the right coronary artery from the left sinus of Valsalva, coursing between the aorta and the pulmonary trunk and then giving origin to the left circumflex coronary artery. A severe stenosis was present in the middle segment of the right coronary artery, which was successfully treated by stent implantation.