Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since most recent chest radiograph , there has been interval placement of a right IJ central venous catheter which terminates projecting over the right atrium . There is no pneumothorax . Lungs are clear . Persistent elevation the right hemidiaphragm is noted . Radiopaque lucencies overlie the right upper mediastinum .
    OUTPUT:
    
Right IJ central venous catheter terminates projecting over the right atrium . No pneumothorax .