Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 09 :45 is submitted .
    OUTPUT:
    
Cardiac and mediastinal contours are likely stably enlarged due to differences in positioning . There has been interval appearance of mild interstitial edema . No focal airspace consolidation is seen to suggest pneumonia . No pneumothorax .