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There is an aberrant right subclavian artery & left superior vena cava (patent left anterior cardinal vein). The left-sided SVC drains into the left atrium with no obliteration of the left brachiocepalic vein (type IIIb left SVC).
There is marked right atrial enlargement, presumably from the atrial septal defect seen on the axial images, although echocardiography data was not available to better evaluate the tricuspid valve.
Hypoplastic right upper lobe branch of the right pulmonary artery (truncus anterior) with hypoplastic right upper lobe.
Minimal dorsal scoliosis is also noted