A<unk>  is observed among those patients who have reduce pulmonary blood flow.
Pruned pulmonary vasculature
Anomalous pulmonary venous connection
Persistent left superior vena cava
Persistent left inferior vena cava
Alveolar capillary dysplasia
Congenital absence of the pericardium
Congenital stenosis of vena cava
Right ventricular outflow tract obstruction