Figure 1: (a) Coronary angiogram in RAO projection showing significant stenoses of the circumflex artery (distal circumflex and obtuse marginal branch, white arrows). (b) Coronary angiogram in LAO projection showing a significant stenosis of the right coronary artery (white arrow). (c) Circumflex artery after coronary intervention (RAO projection). (d) Right coronary artery after coronary intervention (LAO projection). (e and f) Computed tomography showing the single coronary artery after coronary intervention. The right coronary artery originates from the left main stem and travels to the right side on a retro-aortic course.