Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior radiographs performed approximately eight hours earlier , there is very minimal improvement in the moderate - to - severe pulmonary edema . Probable small bilateral effusions are unchanged . There is no discrete consolidation . There is no pneumothorax . Moderate cardiomegaly is stable . The mediastinal contours are unremarkable . Mediastinal clips and a prosthetic cardiac valve are unchanged . The sternal wires are intact .
    OUTPUT:
    
Very minimal improvement in the moderate - to - severe pulmonary edema . Stable small bilateral pleural effusions .