Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted is mild - to - moderate interstitial edema . The lungs are clear . There is moderate cardiomegaly . Unchanged widening of the upper mediastinum presumably caused by retrosternal goiter . Post - CABG changes are again noted .
    OUTPUT:
    
Mild chronic pulmonary edema with moderate cardiomegaly . No acute cardiopulmonary process .