Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged , unchanged . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Remote healed right - sided rib fractures are re - demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .