Figure 1: Computed tomography angiography images (a and b) showing the normal origin of the right (RCA) and the left main (LM) coronary arteries with separate origin of the smaller accessory left circumflex (dashed arrow) from the left (L) aortic sinus, close to the origin of the LM. R: Right aortic sinus. RCA: Right coronary artery, LM: Left main, L: Left aortic sinus