Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval improvement in moderate interstitial and alveolar edema . There are small persistent bilateral pleural effusions . The cardiomediastinal silhouette and hilar contours are unchanged . A left chest pacemaker and leads are in unchanged positions . There is no pneumothorax .
    OUTPUT:
    
1 . Interval improvement in interstitial and alveolar edema with persistent but improving bilateral pleural effusions . 2 . Unchanged position of a left - sided pacemaker with intact pacer wires .