Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly lower since the prior study but clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . No displaced fracture is detected .
    OUTPUT:
    
No displaced fracture is detected within the limitations of routine chest radiography . A dedicated rib series may be obtained if clinically warranted .