Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The lungs are hyperinflated compatible with COPD . There is no pleural effusion or pneumothorax . Subtly increased opacity at the base of the right lung may represent atelectasis or infection in the appropriate clinical setting . As before , cervical fusion hardware projects over the cervical spine .
    OUTPUT:
    
Subtly increased opacity at the base of the right lung could represent infection in the appropriate clinical setting .