Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky density at the lung bases consistent with subsegmental atelectasis . The retrocardiac area is not well penetrated , as before . A right chest tube remains in place . Made of subclavian line is been withdrawn . A PICC is been repositioned can be followed to the cavoatrial junction . Mediastinal structures are stable .
    OUTPUT:
    
Improved aeration of the right lung . The PICC now terminates in the region of the cavoatrial junction .