Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no radiopaque foreign body identified . Lungs are equal in volume , without evidence for air trapping . There is no pneumothorax , pneumomediastinum or air seen underneath the diaphragm . Cardiac , mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
No radiopaque foreign body identified .