Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The aorta is unfolded . The mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormalities detected . No subdiaphragmatic free air is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality .