Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . No free air under the diaphragm . There is an accessory right cervical rib . No pleural effusion , pneumothorax , or focal airspace consolidation . Cardiac size , mediastinal contours and hilar structures are unremarkable . Pleural surfaces are normal .
    OUTPUT:
    
No free air .