Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . Pulmonary vascularity is normal . The lungs are hyperinflated . There is no focal consolidation , pleural effusion or pneumothorax . Several old left - sided rib fractures are redemonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .