Fig. 1

Preoperative multidetector computed tomography angiography. Preoperative multidetector computed tomography angiography demonstrating the anomalous drainage of both the right upper and lower pulmonary veins into the right atrium. The intact atrial septum (black arrowheads) is small and the plane is displaced leftward. Axial images (a, b) and three-dimensional reconstruction (c) are presented. LA = left atrium, RA = right atrium, RUPV = right upper pulmonary. Vein, RLPV = right lower pulmonary vein, SVC = superior vena cava, IVC = inferior vena cava