Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent moderate to severe pulmonary edema with engorgement of the pulmonary vasculature , an enlarged azygos vein , peribronchial cuffing , and bilateral pleural effusions , small on the left and moderate to large and layering on the right . The heart size is top normal . There is no focal consolidation or pneumothorax . Compared with the the prior study of ___ , there may be slight improvement .
    OUTPUT:
    
Moderate to severe pulmonary edema .