Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is present . No acute osseous abnormalities seen . Cervical spinal fusion hardware is re - demonstrated , but not completely assessed . No subdiaphragmatic free air is demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No subdiaphragmatic free air .