CTICasesUnroofed Coronary Sinus with Anomalous Pulmonary Venous Return
Imaging findings
CT chest demonstrates an anomalous left superior pulmonary vein draining into the left brachycephalic vein. Additionally, there is a direct communication between the left inferior pulmonary vein and the coronary sinus, which subsequently connects to the left atrium, resembling a variant of an unroofed coronary sinus associated with a dilated right heart due to a significant left-to-right shunt.
Key takeaways
An unroofed coronary sinus is a rare congenital anomaly characterized by a communication between the coronary sinus and the left atrium. It is often associated with other anomalous pulmonary venous connections and causes a left-to-right shunt, leading to right ventricular and pulmonary artery enlargement.
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