Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the previous study obtained earlier in the day , healing interval changes of presence of mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Cardiac and mediastinal contours are unchanged . Right - sided Port - A - Cath tip remains in the proximal right atrium . Biliary stents are again noted in the region of the common bile duct .
    OUTPUT:
    
Mild bibasilar atelectasis .