Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , lung volumes are lower accentuating heart size and pulmonary vascularity . Moderate to severe enlargement of the cardiac silhouette appears slightly increased from prior . The left chest wall pacemaker is in unchanged position with the lead terminating in the right ventricle . There is mild pulmonary edema which appears new from prior .
    OUTPUT:
    
Slightly increased cardiomegaly with new mild pulmonary edema .