Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly unfolded . The hilar contours are normal . The lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .