Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The lungs are clear and hyperinflated . There is no effusion or pneumothorax . No signs of pneumonia . Cardiomediastinal silhouette is normal . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute findings in the chest . Hyperinflated lungs may reflect underlying COPD .