Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . No rib fracture is identified .
    OUTPUT:
    
No acute cardiopulmonary process . No rib fractures identified . Of note , this study has suboptimal sensitivity for the detection of rib fractures . If there is high clinical concern , a rib series should be obtained .