Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . Opacification in the right upper lung is consistent with postoperative changes / radiation changes as better characterized on CT from ___ . There is subtle opacity involving the right middle lobe and right lower lobe , which is suggestive of infection . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Subtle opacities involving the right lower and right middle lobe are suggestive of infection .