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Hypogenetic Right Lung with Partial Anomalous Pulmonary Venous Return (PAPVR) Without the Typical Features of “Scimitar” Sign

The partial anomalous pulmonary venous return (PAPVR) aka partial anomalous pulmonary venous connection (PAPVC), is a rare congenital cardiovascular condition in which some of the pulmonary veins, drain into the systemic circulation (Halasz, 1956). While congenital, there is no known cause was attributed for these conditions and may possibly be multifactorial in origin. Scimitar syndrome, first described by Raoul Chassinat in 1836, is a variant of the PAPVR and PAPVC characterized by an abnormal pulmonary venous return of the right lung into the inferior vena cava or right atrium via the superior vena cava (SVC), thus a left‐to‐right shunt. Hypoplasia of the pulmonary arteries and abnormal bronchial branching accompany this syndrome and the abnormal venous drainage involves the right side.