In<unk> <unk>  with intact atrial septum a portion (hence the term<unk>  of veins return to the right atrium rather than the left atrium.  As a result oxygenated blood returning form the lung returns to the<unk>  system via the right atrium.
Partial anomalous pulmonary venous connection
Total anomalous pulmonary venous connection
Transposition of the great vessels
Persistent truncus arteriosus
Dextro-Transposition of the great arteries
Double outlet right ventricle
Pulmonary atresia
Interrupted aortic arch