Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endovascular graft at the aortic knob is unchanged in position . The patient is status post median sternotomy and mitral and tricuspid valve replacement . There is a right IJ terminating at the upper SVC and a left subclavian terminating at the mid SVC . The endotracheal tube terminates 8 .4 cm above the carina . The lungs are slightly underinflated relative to the ___ radiographic study . There remains a small right pleural effusion which is unchanged . Bilateral pulmonary opacities appear stable , likely reflecting mild interstitial edema and atelectasis . No focal consolidation is seen .
    OUTPUT:
    
Unchanged appearance of bilateral atelectasis , right pleural effusion , and mild superimposed interstitial edema .