Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged with prominent epicardial fat pad . Mediastinal and hilar contours are unchanged with atherosclerotic calcifications noted at the aortic knob . Lungs are hyperinflated with mild emphysematous changes again noted within the upper lobes . There is mild upper zone vascular redistribution without frank pulmonary edema . Patchy opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
Mild bibasilar atelectasis . Mild emphysema . Mild pulmonary vascular congestion .