Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new right internal jugular central venous catheter terminating in the upper superior vena cava . The patient is status post sternotomy and apparently coronary artery bypass graft surgery . The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . There is no evidence for pleural effusion or pneumothorax . Indistinct pulmonary vessels and mildly prominent interstitial markings suggest mild vascular congestion .
    OUTPUT:
    
1 . Appropriate positioning of right internal jugular central venous catheter without evidence for pneumothorax . 2 . Mild pulmonary edema .