PARTIAL ANOMALOUS PULMONARY VENOUS RETURN WITH INTACT ATRIAL SEPTUM: A RARE CAUSE OF PULMONARY ARTERIAL HYPERTENSION

Partial anomalous pulmonary venous return (PAPVR) is a rare cause of pulmonary hypertension (PH) with a prevalence of 0.1 - 0.2% in the adult population. Most PAPVR is associated with atrial septal defect but it can occur in isolation. A 65-year-old woman presented with gradual-onset exertional