anomalous pulmonary venous connection partial anomalous pulmonary venous connection abnormal development and attachment of one to three of the four pulmonary veins that normally attach to the left atrium of the heart, resulting in partial drainage back into the systemic venous circulation via an anomalous connection to the right atrium, the superior or inferior vena cava, the innominate vein, the coronary sinus or the left subclavian artery; in PAPVC, at least one pulmonary vein remains attached to the left atrium Fyler:2030 PAPVC MPheno.ontology csmith MP:0010442 partial anomalous pulmonary venous return 2010-09-28T03:05:45Z partially anomalous pulmonary venous connection(s) PAPVR