Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild - to - moderate pulmonary edema . No focal opacity is identified to suggest a pneumonia . There are likely tiny bilateral pleural effusions . No pneumothorax is identified . The mediastinal contours are within normal limits . The cardiac silhouette is severely enlarged .
    OUTPUT:
    
Mild - to - moderate pulmonary edema , probable tiny bilateral pleural effusions , and severe enlargement of the cardiac silhouette , due to cardiomegaly and / or pericardial effusion .