congenital pulmonary venous return anomaly https://github.com/monarch-initiative/mondo/issues/4069 https://www.malacards.org/card/congenital_pulmonary_venous_return_anomaly MONDO:0017705 total anomalous pulmonary venous return scimitar syndrome pulmonary venous return anomaly scimitar anomaly Congenital pulmonary venous return anomaly is a cardiac malformation where some or all of the pulmonary veins drain into the right atrium or the systemic veins, with or without the presence of pulmonary venous obstruction, leading to various manifestations such as fatigue, exertional dyspnea, pulmonary arterial hypertension, cyanosis and progressive congestive heart failure. The two main subtypes are congenital partial pulmonary venous return anomaly (PAPVC), where one or a few of the pulmonary veins are anomalous, and congenital total pulmonary venous return anomaly (TAPVC), where all of the pulmonary veins are anomalous. UMLS:C0265916 anomalous pulmonary venous return congenital pulmonary venous connection anomaly MEDGEN:539577 APVR GARD:0004599 Orphanet:3090 TAPVR1 TAPVR congenital pulmonary veins anomaly