Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well inflated and clear . Cardiomediastinal silhouette is unremarkable . Hilar and pleural surfaces are normal . No pneumothorax . Osseous structures are unremarkable .
    OUTPUT:
    
Normal chest . No evidence of displaced rib fracture . However , if the patient 's symptoms persist , a dedicated rib series could be performed .