Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . Right lateral eighth rib fracture is re - demonstrated .
    OUTPUT:
    
Known right lateral eighth rib fracture . No acute cardiopulmonary abnormality .