Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal . Lung hyperinflation is compatible with emphysema / COPD as seen on the previous chest CT . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Remote right - sided rib and sternal deformities are unchanged . Known osseous lesions within the bony thorax are better assessed on the previous CT . There is no subdiaphragmatic free air . Clips are noted in the upper abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No subdiaphragmatic free air .