Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is significantly enlarged , similar to prior examinations . Again noted are surgical clips in the mediastinum . No midline sternal wires are identified . Hazy , bilateral opacities are noted , which are diffuse . The pulmonary vasculature is mildly indistinct . A small right pleural effusion may be present . There is no pneumothorax . Bibasilar atelectasis is noted .
    OUTPUT:
    
1 . Mild pulmonary edema . 2 . Cardiomegaly .