Scimitar syndrome, a rare congenital heart disease, involves an anomalous pulmonary venous return where the right pulmonary veins return to the inferior vena cava instead of the left atrium.

Application of the “Double-decker Technique” for Scimitar Syndrome Can Reduce the Risk of Postoperative Pulmonary Venous Obstruction, Leading to Better Surgical Outcomes for This Disease.