Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous radiograph , mild improvement in the pulmonary edema . Low lung volumes . Moderate cardiomegaly . Worsening bibasilar atelectasis with persistent bilateral small pleural effusions . . No pneumothorax .
    OUTPUT:
    
Mild interval improvement in the interstitial pulmonary edema . Worsening bibasilar atelectasis .