Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the study from the prior day . There has been some slight interval improvement in the lower lobe opacities . However , there continues to be volume loss / infiltrate in these regions . The heart size , continues to be moderately enlarged with mild pulmonary vascular redistribution . There are probable small bilateral effusions , slightly smaller than previous .
    OUTPUT:
    
Slight improvement compared to prior day .