Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to earlier same day evaluation from five hours prior . There has been slight improvement in mild pulmonary edema . Bibasilar atelectasis remains unchanged . Lung volumes remain low . There is otherwise no significant interval change . Barium is seen within the stomach and small bowel from earlier examination .
    OUTPUT:
    
Mild improvement of pulmonary edema .