<unk>  (or<unk><unk><unk>  drainage or<unk><unk><unk>  return) is a congenital defect of the<unk>  veins.
Anomalous pulmonary venous connection
Congenital pulmonary airway malformation
Congenital stenosis of vena cava
Stenosis of pulmonary artery
Ventricular outflow tract obstruction
Asphyxiating thoracic dysplasia
Persistent left superior vena cava
Absent pulmonary valve syndrome