Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ET tube , intra-aortic balloon pump , and right IJ line and NG tube are unchanged . The appearance of the core valve is unchanged . There is a left IJ Swan - Ganz catheter with tip in the right descending pulmonary artery . Again seen is dense retrocardiac opacity K Shin compatible with volume loss / infiltrate / effusion remainder of the lungs are clear
    OUTPUT:
    
New Swan - Ganz catheter with tip in the right descending pulmonary artery