Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 11 :56 is submitted .
    OUTPUT:
    
Interval extubation , removal of the nasogastric tube , left chest tube , mediastinal drains and right internal jugular Swan - Ganz catheter . The right internal jugular introducer remains in place with the tip in the proximal SVC . The patient is status post median sternotomy with expected postoperative cardiac and mediastinal contours . Linear opacity at the left base likely reflects atelectasis and the tract from the prior chest tube . Patchy opacity at the right base likely reflects atelectasis . Lung volumes are low but there is no evidence of pulmonary edema . No pneumothorax .