Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval improvement of the left and right lung atelectasis . There are no new focal consolidations . There is no pulmonary edema , pleural effusion , or pneumothorax . The cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
Improvement of right mid lung zone collapse and left lower lobe superior segment collapse .