Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior right IJ central venous catheter is no longer visualized . Left IJ sheath is in place . Tip projects over the thoracic inlet . There is no visualized pneumothorax on this supine film . Lung volumes are relatively low however the lungs remain relatively clear . The cardiomediastinal silhouette is stable given differences in positioning . No acute osseous abnormalities . Surgical clips seen in the right upper quadrant .
    OUTPUT:
    
Left IJ catheter projects over the thoracic inlet . No pneumothorax visualized on this supine film .