Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Lungs appear clear bilaterally aside from mild basilar plate - like atelectasis . Lungs are hyperinflated with upper lobe lucency and splaying of bronchovasculature which is compatible with known severe underlying emphysema . Comparison was also made with a prior CT chest from ___ . No pleural effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . Bony structures appear intact .
    OUTPUT:
    
Emphysema without superimposed pneumonia .