Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the degree of pulmonary edema has improved , but is persistent . No new focal consolidation concerning for pneumonia . Small bilateral pleural effusions are stable . No change in the cardiomediastinal silhouette .
    OUTPUT:
    
1 . Pulmonary edema has improved , but persists . 2 . Small bilateral pleural effusions .