Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate well expanded and clear lungs bilaterally . Visualized osseous structures unremarkable without evidence of acute fracture . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No definite rib fracture identified .