Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mild to moderately enlarged but unchanged . The mediastinal and hilar contours are within normal limits . The lungs are clear . No pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities . No free air is seen under the diaphragms .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No free air is identified under the diaphragms .