Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post aortic valve replacement and probably coronary artery bypass graft surgery . A right internal jugular venous catheter terminates at approximately the confluence of the right internal jugular vein with the right subclavian . The cardiac , mediastinal and hilar contours appear stable . There is similar volume loss at the left lung base with patchy atelectasis . It is difficult to exclude a pleural effusion on the left . There is no indication of pleural effusion on the right .
    OUTPUT:
    
Right internal jugular catheter terminating at the confluence of the right internal jugular and subclavian veins . No evidence of acute disease .