Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , the tip of a left - sided PICC line is now in the superior right atrium . Previously , it was folded back on itself in the proximal left brachiocephalic vein . The lungs are well inflated and clear . No focal consolidation , effusion , pneumothorax is present . The cardiac and mediastinal contours are unremarkable .
    OUTPUT:
    
Left - sided PICC line is in the superior right atrium . The line can be withdrawn 2 cm for more optimal positioning . A preliminary interpretation that the line tip was in the cavoatrial junction was communicated by Dr . ___ with the ___ nurse , ___ at 10 :30a .m . on ___ . Revised interpretation was communicated with ___ via phone at ___ on ___ .