Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New from the prior examination is a prostatic aortic valve and expected position . Dextroscoliosis of the thoracic spine and stabilization rods are unchanged from ___ . Right internal jugular catheter terminates at the superior cavoatrial junction . The cardiomediastinal and hilar contours are within normal limits . The patient is status post right upper lobectomy resulting in apical thickening and elevation of the right hilus , as before . Rounded lucency at the apex of the right lung persists and represents an air - filled pleural space , unchanged from ___ . The right lower lung is hyperexpanded but clear . The left lung is clear . There is no effusion or pneumothorax .
    OUTPUT:
    
Interval placement of a prosthetic aortic valve . No evidence of mediastinal widening , effusion or pneumothorax .