CT
Enlarged heart with a defect in the interventricular septum. Dilated main pulmonary trunk and left the main branch with a relatively reduced size of the right one. A hypoplastic right lung is noted with posterior trans-mediastinal herniation. There is an abnormal vein draining the right lung to the supra-hepatic IVC. Note the sequestrated portion of the right lung supplied by a branch from the abdominal aorta.