Dual-Drainage in Mixed Total Anomalous Pulmonary Venous Connection - A Rare Variant

Total anomalous pulmonary venous connection (TAPVC) is a rare congenital anomaly and mixed TAPVC with dual drainage is even rarer. We report the case of a 1-year-old male child presenting with progressive dyspnea, in whom computed tomography (CT) angiography revealed a complex mixed-type TAPVC with dual drainage into the coronary sinus and innominate vein. This case highlights the critical role of CT angiography in delineating complex pulmonary venous anatomy and guiding surgical planning to prevent residual shunting.