Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are hyperinflated and lucent consistent with known emphysema . There is no focal consolidation , large effusion or pneumothorax . The cardiomediastinal silhouette is normal . No signs of congestion or edema . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Emphysema without superimposed pneumonia .