Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is mildly tortuous with atherosclerotic calcifications noted at the knob . The pulmonary vasculature is not engorged . Hilar contours are similar . Lungs are hyperinflated with mild emphysematous changes again noted predominantly in the upper lobes . Patchy opacities are demonstrated in the lung bases without focal consolidation . No pneumothorax is present . Blunting of the costophrenic angles posteriorly on the lateral view suggests trace bilateral pleural effusions . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Small bilateral pleural effusions and patchy opacities in the lung bases likely atelectasis . Mild emphysema .