Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal contours demonstrate mildly tortuous aorta but no increase in mediastinal width and no evidence of pneumomediastinum . The lungs are clear . There is no pleural effusion or pneumothorax . Again multiple healing posterolateral rib fractures are present on the right . There is no subdiaphragmatic free air .
    OUTPUT:
    
Multiple healing right posterolateral rib fractures but no pneumomediastinum or subdiaphragmatic free air .