Single coronary artery from right aortic sinus with septal course of left anterior descending artery and left circumflex artery as continuation of right coronary artery: a hitherto unreported coronary anomaly.

A single coronary artery (SCA) in the absence of structural heart disease is a rare coronary anomaly and is often detected incidentally during coronary angiography. We report a hitherto undescribed type of SCA originating from the right sinus of Valsalva, with the left anterior descending artery having a septal course and the right coronary artery continuing as the left circumflex artery, which was incidentally detected in a 73-year-old female.