Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs performed on same day on ___ at 06 : 17 , there has been interval improvement in severe bilateral pulmonary edema in the mid and upper lung zones , with persistent opacifications at the bilateral bases , and possible bilateral pleural effusions . There is no pneumothorax . Cardiomediastinal silhouette is similar to prior .
    OUTPUT:
    
Interval improvement in severe bilateral pulmonary edema , particularly in the mid and upper lung zones .