Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The lungs appear clear . The left acromioclavicular interval is at the upper limits of normal . The right acromioclavicular joint appears narrowed . There is no evidence for fracture , dislocation or bone destruction .
    OUTPUT:
    
No evidence of injury .