Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Upper lobe predominant mild emphysema is again demonstrated without focal consolidation . No pleural effusion or pneumothorax is demonstrated . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild upper lobe predominant emphysema . No acute cardiopulmonary abnormality .