Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , the right internal jugular venous catheter approach Swan - Ganz catheter tip has been advanced and now lies within the right main pulmonary artery , well within the mediastinal contours . The left - sided and right - sided chest tubes as well as mediastinal drain has since been removed . Otherwise , no significant interval change . Persistent lower lung volumes . No focal consolidation , pulmonary edema , pleural effusion , or pneumothorax . The heart is mildly enlarged , unchanged . ETT in standard position . Median sternotomy wires unchanged .
    OUTPUT:
    
Swan - Ganz catheter in appropriate position .