Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated with flattening of the diaphragms compatible with COPD . Heart size is mildly enlarged but unchanged . The mediastinal and hilar contours are stable . Previous pattern of mild pulmonary edema has resolved . Small bilateral pleural effusions are noted . No focal consolidation or pneumothorax is seen . Minimal atelectasis is noted in the lung bases . Degenerative changes are seen within the thoracic spine .
    OUTPUT:
    
Mild bibasilar atelectasis and small bilateral pleural effusions . COPD .