Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are changes related to emphysema . There is superimposed mild interstitial pulmonary edema and small bilateral effusions with bibasilar atelectasis . There are no new focally occurring opacities concerning for pneumonia . There is no pneumothorax . The cardiomediastinal and hilar contours are stable demonstrating marked cardiomegaly . There is tortuosity of the thoracic aorta , which contains atherosclerotic calcification .
    OUTPUT:
    
Mild interstitial pulmonary edema .