From the case:
Total anomalous pulmonary venous return (type I)
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All pulmonary veins drain into the superior vena cava through the left vertical vein and left brachiocephalic vein.
Case Discussion
The current case represents type I (supra cardiac) total anomalous pulmonary venous return (TAPVR), which is the most common type and accounts for 55% of cases. The common pulmonary venous sinus drains into the right superior vena cava (SVC) through the left vertical vein and left brachiocephalic vein. An interatrial communication (right-to-left shunt), either an atrial septal defect (ASD) or patent foramen ovale (PFO), is necessary for survival.
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