Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC line has been retracted , now terminating at the approximate superior cavoatrial junction . Heart size is stable and central vascular congestion is unchanged . No new consolidation to suggest pneumonia . No pleural disease . Heterogeneous interstitial opacities at the lung bases have not significantly changed compared to the most remote radiograph from ___ .
    OUTPUT:
    
1 . Slightly retracted left PICC line terminating at the superior cavoatrial junction . 2 . No evidence of pneumonia . 3 . Chronic interstitial changes are unchanged .