Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well - expanded and clear . Cardiomediastinal and hilar contours are unremarkable . No pneumothorax , pleural effusion , mass , or consolidation . No radiopaque foreign body identified .
    OUTPUT:
    
1 . No pulmonary mass detected . 2 . No radiopaque foreign body .