Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are hyperinflated with upper lobe lucency compatible with known emphysema . No focal consolidation , effusion or pneumothorax is seen . The cardiomediastinal silhouette appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Emphysema , otherwise unremarkable .