Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the known right - sided postoperative pneumothorax has decreased in size , but still present , as no pleural markings are identified in the right upper lobe . Postoperative changes of the right chest wall are unchanged . No new focal consolidation or pleural effusions .
    OUTPUT:
    
Smaller right - sided postoperative pneumothorax and unchanged right thoracotomy sites .