Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation to suggest pneumonia . There is no overt pulmonary edema . No pleural effusion or pneumothorax is seen . Accounting for differences in technique , the heart size is normal and unchanged . The mediastinal contour is unremarkable .
    OUTPUT:
    
No overt failure but impossible to fully excluded interstitial edema .