Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tracheostomy tube projects over midline , and a right central venous catheter terminates at the cavoatrial junction . The cardiac and mediastinal silhouette is unchanged . Bibasilar atelectasis is seen with possible mild edema . Median sternotomy wires are intact .
    OUTPUT:
    
Tracheostomy projects over midline . Bibasilar atelectasis with possible mild edema .