Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-erect portable frontal chest radiograph demonstrates interval placement of a left - sided internal jugular venous catheter terminating likely at the confluence of the subclavian vein and superior vena cava . Otherwise , exam unchanged . No pneumothorax .
    OUTPUT:
    
Left IJ venous catheter as described above . No pneumothorax . Otherwise , no change .