Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is redemonstration of a left PICC , with its tip now near the superior cavoatrial junction , previously seen to terminate within the right atrium . The lungs are clear . There are no pleural effusions . No pneumothorax is seen . The cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
Appropriately positioned left PICC , terminating near the superior cavoatrial junction . Otherwise , no significant interval change .