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 compatible with known emphysema . No focal consolidation concerning for pneumonia . No large effusion or pneumothorax . No signs of congestion or edema . Cardiomediastinal silhouette appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Emphysema without superimposed acute process .