Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single supine view of the chest demonstrates interval placement of a left central venous catheter with tip at the RA / SVC junction . There is no pneumothorax . Low lung volumes are noted with crowding of the bronchovascular markings . No confluent consolidation identified , although there may be mild interstitial edema .
    OUTPUT:
    
Interval placement of left IJ central venous catheter with tip at the RA / SVC junction . No pneumothorax .