Intra-atrial path of the right coronary artery: An infrequent and still unknown anomaly

Coronary congenital anomalies are rare. Most are benign, but some can cause myocardial damage or sudden death. With the advancement of imaging studies, its diagnosis is increasing. We present a series of three cases in which the right coronary artery has an intra-auricular path. We examined a middle-aged man and two women with no cardiovascular history. They consulted a doctor for chest pain. Conventional ergometry and transthoracic echocardiography were performed and revealed normal results. Due to persistence of the symptoms, a computed tomography of the coronary arteries is requested. There were no significant atherosclerotic lesions found; however, an abnormality was found. Anatomical characteristics were evaluated using conventional axial images and curved multiplanar reconstructions, with retrospective acquisition and single injection of contrast (Fig. 1 and 2). The abnormality is diagnosed by evaluating that any segment of the artery is completely surrounded by blood in the right atrium. The artery originates from the right Valsalva sinus, with the junction of the proximal and middle thirds being affected.