Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been a mild improvement in pulmonary edema with otherwise little change overall in comparison to the prior study from yesterday . Again visualized is stable retrocardiac opacity and small left pleural effusion . There is no evidence of new consolidations or pneumothoraces . The cardiomediastinal silhouette remains stable and moderately enlarged . Osseous structures are normal .
    OUTPUT:
    
Mild improvement in pulmonary edema with persistent left retrocardiac opacity , small left pleural effusion , and mild pulmonary edema .