Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior film , the right IJ Swan - Ganz catheter has been repositioned , with the tip now overlying the proximal right pulmonary artery . The right sided central line is unchanged , tip overlying cavoatrial junction . No pneumothorax is detected . The cardiomediastinal silhouette is enlarged , but stable , allowing for technical differences . The right and left lung bases are grossly clear , except for some patchy retrocardiac opacity , which appears improved . No gross effusion identified on either side .
    OUTPUT:
    
Repositioning of Swan - Ganz catheter -- the tip now overlies the proximal right pulmonary artery .