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 evidence of rib fracture .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Although no rib fracture is identified , this study is suboptimal for the assessment of rib fractures . If there is high clinical concern for rib fracture , dedicated rib series or chest CT is more sensitive .