CT
Large pure thin-walled fluid attenuating cystic lesion in the right upper lobe. No solid components.
Medially, it is compressing and narrowing the lower tracheal lumen against the aortic arch and abutting the aortic arch. Anteriorly, it is displacing the superior vena cava.
Atelectatic changes are noted in the right middle lobe. The normal aspect of the left lung is noted showing normal volume. There is no pleural effusion or pneumothorax.
Small PDA detected. (Patent ductus arteriosus) The pulmonary trunk is mildly dilated. Left cardiac chambers appear prominent. All pulmonary veins are draining normally to the left atrium. Aorta is originating from the left ventricle. Superior and inferior vena cavae are draining normally to the right atrium. No CT detectable ASD or VSD. Normally branching coronary arteries.