Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest film ___ at 09 :01 is submitted .
    OUTPUT:
    
Right subclavian PICC line and nasogastric tube are unchanged in position . Overall cardiac mediastinal contours are stable . No pneumothorax is seen . Given differences in technique , the lungs remain grossly clear . No pulmonary edema . Possible small layering left effusion .