Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Lungs are clear and the pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There is no free air under the diaphragms . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No subdiaphragmatic free air .