Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from earlier the same day , mild improvement in the interstitial pulmonary edema and slight improvement right upper lobe airspace opacity . Small bilateral pleural effusions persist . Mild cardiomegaly has improved .
    OUTPUT:
    
Slight improvement in widespread interstitial edema and localized right upper lobe opacity .