Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are persistent bibasilar opacities , likely a combination of atelectasis and small - to - moderate effusions , unchanged from most recent prior . The cardiomediastinal and hilar contours are unchanged and within normal limits . Mild pulmonary edema is unchanged . There is no pneumothorax .
    OUTPUT:
    
Unchanged mild edema and basilar atelectasis with small - to - moderate effusions .