Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new right internal jugular central venous catheter terminates in the lower superior vena cava . There is no pneumothorax . The cardiac , mediastinal and hilar contours appear unchanged . A mild interstitial abnormality appears slightly more prominent , suggesting mild fluid overload . Bilateral nephrostomy tubes are partly visualized . There is similar mild relative elevation of the right hemidiaphragm .
    OUTPUT:
    
Satisfactory positioning of right internal jugular central venous catheter ; no evidence for pneumothorax .