Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated but clear . Dramatic increase in lung volumes since the prior study raises the possibility of bronchospasm although no bronchial cuffing is seen . Heart size and mediastinal contours are normal . No pleural effusion or pneumothorax . Osseous structures are intact .
    OUTPUT:
    
Clear lungs , possibly hyperinflated . The increase in volumes from the prior radiograph could suggest bronchospasm .