Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 06 : 27 is submitted .
    OUTPUT:
    
Tracheostomy tube remains in satisfactory position . Right internal jugular central line is unchanged in position . Cardiac and mediastinal contours are unchanged . Persistent stable bibasilar opacities which may reflect atelectasis or pneumonia . Interval appearance of mild interstitial edema . No obvious pneumothorax .