X-ray
cardiac dextroposition
curvilinear opacity in the right lung extending from the mid zone towards the medial border of the right hemidiaphragm (confirmed to be the scimitar vein draining into the IVC on CT)
ovoid structure on the medial side of the right middle lung (confirmed on CT to be the main pulmonary trunk)
right lung smaller than the left, as evidenced by right hemidiaphragm elevation compared to the left and rightward displacement of the mediastinum.