Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . The patient is now extubated . The previously existing Swan - Ganz catheter has been removed . The sheath has been exchanged over a wire by a right internal jugular route line , the tip of which reaches some 4 cm below the level of the carina in the area of the expected right SVC / atrial junction . Whereas the right - sided chest tube has been removed , the left - sided tube remains in unchanged appropriate position . Heart size has increased slightly postoperatively , but no significant increase of pulmonary congestive pattern or new infiltrates is seen . The previously mentioned metallic structures of a mitral valve prosthesis remain in unchanged position .
    OUTPUT:
    
No pneumothorax . Central venous line terminating close to atrial junction . Recommend withdrawal by 2 cm to avoid possible contact with cardiac structures .