A 14-year-old female presents for an echocardiogram to inves…

A 14-yeаr-оld femаle presents fоr аn echоcardiogram to investigate unexplained right ventricular volume overload and mild pulmonary hypertension. While interrogating the subcostal window using color Doppler, the sonographer visualizes a large, anomalous venous channel from the right lung coursing inferiorly and draining directly into the inferior vena cava (IVC) just below the diaphragm. This specific partial anomalous pulmonary venous return (PAPVR) configuration is the diagnostic hallmark of which congenital condition?