The aortic arch is interrupted at the level distal to the normal left subclavian artery.
The descending aorta is supplied by the left main pulmonary artery through the patent ductus arteriosus (PDA).
Large ventricular and atrial septal defects (VSD and ASD) are demonstrated.
There are changes reflective of pulmonary arterial hypertension which include right ventricular hypertrophy, bowing of the interventricular septum towards the left, dilated main pulmonary trunk and branches resulting to increased segmental artery-to-bronchial diameter ratio and increased main pulmonary artery to ascending aorta ratio.