Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Bibasilar opacities have slightly improved since the prior exam . Small residual effusions are similar to prior . Previously seen pulmonary edema has resolved . No new consolidation . Heart size and mediastinal contours are stable .
    OUTPUT:
    
Small bilateral pleural effusions are similar to prior with bibasilar opacities reflecting infection , aspiration , or atelectasis .