Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extensive bilateral parenchymal opacities with air bronchograms are unchanged . Enlargement of the cardiac silhouette is unchanged . There is no large pleural effusion or pneumothorax . Spinal stimulator leads are noted .
    OUTPUT:
    
Diffuse bilateral opacities are overall unchanged and may represent moderate to severe pulmonary edema .