Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes and hilar contours are normal . There is no air under the diaphragm . No displaced rib fracture is seen .
    OUTPUT:
    
Normal chest radiographs .