Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The cardiomediastinal silhouette , hilar contours , pleural surfaces are normal . No pleural effusion or pneumothorax present . Deformity of the right posterior 7th rib likely prior healed rib fracture .
    OUTPUT:
    
Normal radiograph of the chest .