Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . Lungs are clear without pleural effusion or pneumothorax . Fractures of the left fifth through ninth posterior ribs appear acute . Healing right - sided rib fractures again identified . Significant bony callus identified .
    OUTPUT:
    
Multiple acute appearing left rib fractures . No focal consolidation .