RE: Anomalous Cardiac Venous Connection to the Left Atrium Associated with Coronary Sinus Atresia

Dear Editor, We read with interest the article of Chou et al. (1). The authors reviewed the multidetector computed tomography (CT) findings of congenital coronary sinus anomalies and reported two cases of coronary sinus anomaly. We would like to share our observations, with respect to coronary sinus anomalies, with our colleagues. For better clinical outcomes, coronary venous variations should be recognized in the pre-operative planning of numerous cardiac surgical interventions (2). Thus, attention should be directed on the coronary venous anatomy as well as the coronary arterial system. We encountered coronary sinus anomaly in two patients who underwent coronary CT angiography. In the first case, the right atrial coronary sinus ostium was atresic (Fig. 1). Hypoplastic persistent left superior vena cava, great cardiac vein, median cardiac vein,