Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Lungs are hyperinflated but clear without focal consolidation . No pleural effusion or pneumothorax is identified . No radiopaque foreign body is present . There are no acute osseous abnormalities . No subdiaphragmatic free air is demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No subdiaphragmatic free air .