Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Minimal atherosclerotic calcifications are noted at the aortic arch . Pulmonary vasculature is normal . Minimal atelectasis is seen in the lung bases . No focal consolidation is present . Lungs remain hyperinflated compatible with underlying COPD . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal atelectasis in the lung bases . COPD .