Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Lungs are hyperinflated compatible with underlying emphysema . Linear density in the left mid lung is compatible with atelectasis . There is no sign of pneumonia or CHF . No pleural effusion or pneumothorax is seen . The cardiomediastinal silhouette is normal . Bony structures are intact . There is no free air below the right hemidiaphragm .
    OUTPUT:
    
No pneumonia . Emphysema .