Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Marked cardiomegaly with prominent the main pulmonary artery and probable prominence of the right hilum is unchanged . Again seen is a multi lead pacemaker , unchanged in configuration . Also again seen is a right IJ Swan - Ganz catheter . On the current examination , the tip of the Swan - Ganz catheter lies quite distal , possibly near the origin of the lower lobe vessels . No obvious pneumothorax identified . In the right lung and left upper / mid zones , there is upper zone redistribution mild vascular plethora , and diffuse vascular blurring . I suspect that some of the blurring reflects respiratory motion . Allowing for this , the distribution of these findings is similar . The right lung base remains grossly clear , without consolidation or effusion .
    OUTPUT:
    
Swan - Ganz catheter tip lies relatively distal . Clinical correlation regarding retraction is requested no given the distal positioning . Possible increased vascular blurring , though I suspect that much of this this is artifact due to respiratory motion . Otherwise , doubt significant interval change .