anomalous pulmonary venous connection total anomalous pulmonary venous connection total anomalous pulmonary venous drainage TAPVR MPheno.ontology Fyler:0900 2010-09-28T03:01:58Z Fyler:900 total anomalous pulmonary venous return TAPVC csmith TAPVD totally anomalous pulmonary venous return MP:0010441 abnormal development and attachment of all four pulmonary veins that normally attach to the left atrium of the heart, resulting in complete anomalous 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 TAPVC, none of the four pulmonary veins are attached to the left atrium