Coronary Arteries – Retro-aortic Course Anomalous Origin of the Circumflex from the RCA Anomalous Origin of The Circumflex Coronary Artery from the Right Coronary Artery Cusp Axial CT of the coronary arteries shows anomalous origin of the Circumflex from the Right coronary cusp. This is the most common anomaly of the coronary arteries Courtesy Radiopedia Anomalous Origin of The Circumflex Coronary Artery from the Right Coronary Artery Cusp CT Right Coronary Angiogram shows anomalous origin of the Circumflex from the Right coronary cusp. This is the most common anomaly of the coronary arteries Ashley Davidoff MD Anomalous Origin of The Circumflex Coronary Artery from the Right Coronary Artery Cusp CT Right Coronary Angiogram shows anomalous origin of the Circumflex from the Right coronary cusp. This is the most common anomaly of the coronary arteries Ashley Davidoff MD