Anomalous pulmonary venous connection

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Anomalous pulmonary venous connection
Illustration of total anomalous pulmonary venous connection
Specialty	Medical genetics

Anomalous pulmonary venous connection (or anomalous pulmonary venous drainage or anomalous pulmonary venous return^[1]) is a congenital heart defect of the pulmonary veins. It can be a total anomalous pulmonary venous connection, wherein all four pulmonary veins are incorrectly positioned, or a partial anomalous pulmonary venous connection, wherein only some of the pulmonary veins are incorrectly positioned.