Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 06 : 12 is submitted .
    OUTPUT:
    
Left - sided pacer remains in place with leads terminating over expected location of right atrium and right ventricle , respectively . The patient is status post median sternotomy . A metallic esophageal stent and coronary stent are unchanged in position . There is persistent blunting of the right costophrenic angle which may reflect a small effusion and / or chronic pleural thickening . There has been interval improvement in the mild interstitial edema . Overall cardiac and mediastinal contours are unchanged . No focal airspace consolidation is seen to suggest pneumonia or aspiration . No pneumothorax .