Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , but unchanged . The aorta is unfolded . The mediastinal and hilar contours are otherwise within normal limits and similar compared to the prior study . Lungs are clear and the pulmonary vascularity is not engorged . No pleural effusion or pneumothorax is visualized . No acute osseous abnormalities are seen .
    OUTPUT:
    
No acute cardiopulmonary process .