Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate hyperinflated lungs with flattened diaphragm , consistent with emphysema . No focal increase in opacity is seen , concerning for pneumonia . The cardiac and mediastinal contours are normal . Moderate hiatal hernia is noted in the midline . No pleural abnormality is detected .
    OUTPUT:
    
Chronic emphysema with no acute pneumonia .