Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . There are bilateral pleural effusions which are small and not significantly changed from the prior exam . Mild interstitial prominence is most conspicuous from prior exam though its persistence reflects the presence of interstitial edema . No pneumothorax or definite signs of pneumonia . The heart and mediastinal contour is stable . Bony structures are intact .
    OUTPUT:
    
Small bilateral effusions are stable with possible mild interstitial edema .