Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest film of ___ at 806 is submitted .
    OUTPUT:
    
Endotracheal tube , nasogastric tube , left chest tubes , and right internal jugular lines are unchanged in position . The patient is status post median sternotomy for recent aortic repair . Overall cardiac and mediastinal contours are unchanged . There continues to be stable patchy retrocardiac opacity with probable associated small effusion consistent with lower lobe atelectasis , although pneumonia can not be excluded . Interval decrease in the pneumopericardium . Right lung remains grossly clear . No pneumothorax , although the sensitivity to detect pneumothorax is diminished given supine technique .