Anomalous Origin And Inter-Arterial Course of the Right Coronary Artery: A Case Series

Abstract

In our radiology clinic, between November 2014 and May 2016, we obtained MSCT from a total of 1,200 patients who had presented with chest pain, and who had undergone coronary revascularization procedures, in order to evaluate coronary arteries and possible coronary artery anomalies. Among the patients who had computed tomography (CT) angiography, the patients with coronary anomalies were evaluated. In total, 10 patients with coronary anomalies were included. An anomalous origin of the RCA was detected in six of these patients (3 males and 3 females). None of the patients was admitted to hospital for myocardial infarction (MI) or ischemia caused by an anomalous origin of the RCA. The ECG findings of all patients were normal. Close to the origin of the left coronary artery, but separately, a right coronary artery originating from the left sinus of Valsalva was observed in the MSCT (Figure 1). The proximal part of the RCA had an inter-arterial course between the aorta and pulmonary artery in all patients (Figure 2). No significant stenosis in an anomalous origin of the RCA requiring percutaneous coronary intervention was detected in the MSCT. All patients were treated medically and no unfavorable cardiac event was observed during approximately two years of follow-up.