Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine chest film ___ at 19 :37 is submitted .
    OUTPUT:
    
Left subclavian PICC line is unchanged in position . Although the lung volumes have slightly diminished , no focal airspace consolidation is seen to suggest pneumonia . No pulmonary edema or large effusions . Overall cardiac and mediastinal contours are stable .