Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 08 : 11 is submitted .
    OUTPUT:
    
Right internal jugular central line continues to have its tip in the distal SVC near the cavoatrial junction . Overall cardiac mediastinal contours are stable . There is worsening mild interstitial edema . Patchy retrocardiac opacity is unchanged . No large effusions . No pneumothorax . Linear opacity in the right upper lobe likely reflects scarring .