Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . When compared to prior , there appears to be slight interval progression of the pulmonary edema with more confluent opacities at the bases . Prominent extrapleural density seen on the right laterally suspicious for a small effusion . There is no definite left pleural effusion . Degree of cardiomegaly is unchanged .
    OUTPUT:
    
Interval progression of the bilateral opacities most compatible with pulmonary edema . Please note that superimposed infection can not be excluded .