Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Lungs are hyperinflated with upper lobe predominant emphysema re - demonstrated . Subsegmental atelectasis is seen in the lung bases . Minimal blunting of the costophrenic angles posteriorly suggests trace bilateral pleural effusions . No focal consolidation or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Bibasilar atelectasis without focal consolidation . Possible trace bilateral pleural effusions . Emphysema .