Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph excludes much of the left lung , and is not significantly changed in comparison with the prior examination . There is an interval addition of a right IJ central venous catheter , the tip of which approaches the midline , an unusual course for a venous catheter . The endotracheal tube whose tip is no less than 9 cm from the carina , should be advanced 4 cm for more secure positioning .
    OUTPUT:
    
Unusual course of right neck central venous catheter , which may be arterial and clinical correlation is recommended . This was read in conjunction with the patients CT and findings were discussed urgently with Dr . ___ at the time of CT interpretation . ETT should be advanced .