Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly unfolded . Mediastinal and hilar contours otherwise are unchanged . Pulmonary vascularity is normal . Lungs are clear . No pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .