Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The lungs appear clear without signs of pneumonia or CHF . No effusion or pneumothorax is seen . Upper lobe lucency is noted compatible with known underlying emphysema . The cardiomediastinal silhouette is normal . The bony structures appear intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute findings in the chest .