Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate pulmonary edema appears slightly improved as compared to the prior study . Haziness and indistinctness of the pulmonary vasculature persists . In the interval since the prior study , there is increase in bibasilar atelectasis . No large pleural effusion is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Moderate pulmonary edema , improved since the prior study . Bibasilar atelectasis .