[Table/Fig-5a]:

Pulmonary Atresia.

An eight-month-old male with cyanosis at birth, feeding difficulty; failure to demonstrate pulmonary artery on echocardiography diagnosed with pulmonary atresia: (a) Diagrammatic representation of cardio-vascular anatomy in pulmonary atresia; (b) Plain radiograph shows mild cardiac enlargement with upturned apex (RV configuration) and decreased pulmonary arterial markings. Collateral vessel around right hilar region are prominent (open arrow); (c) axial CT images shows a large sub-aortic ventricular septal defect (arrow) and RVH; (d) Reconstructed outflow CT view shows overriding of aorta and large sub-aortic VSD (arrow).