Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated . Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal and the lungs are clear . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary process .