Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The lungs are clear with no focal consolidation , pleural effusion or pneumothorax . Multiple bilateral chronic rib fractures are stable in appearance from the prior exam and show evidence of bony healing . Elevation of the hemidiaphragms is stable likely due to fibrotic change .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Chronic findings as described above .