Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased vascular plethora with pulmonary vascular redistribution and enlarged hila that have worsened in appearance compared to the study from the prior day . In addition there is volume loss in compressive changes at both bases . The particularly in the retrocardiac region superimposed infectious process ca n't be excluded
    OUTPUT:
    
Pulmonary edema . An underlying infectious infiltrate ca n't be excluded .