Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , there is increased opacity of the right lung base . Otherwise , bilateral diffuse interstitial opacities are not significantly changed . A prominent right hilus is also similar in appearance to prior exam as well as to exam from ___ . A left - sided pleural effusion is also stable . Dense retrocardiac opacity is unachanged and compatible with left lower lobe atelectasis . Otherwise , the mediastinal contour is unchanged . Dense atherosclerotic calcifications of the aortic knob are redemonstrated . Sternotomy wires are intact , and mediastinal clips are unchanged .
    OUTPUT:
    
1 . Worsened opacification of the right lower lung on the background of interstitial edema may represent superimposed pneumonia . 2 . Left - sided pleural effusion with concurrent moderate atelectasis is unchanged since at least ___ . Biapical scarring and appearance of a prominent right hilus are also stable .