Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild pulmonary edema has improved since ___ , but moderate cardiomegaly is stable . Small pleural effusions are presumed . Mediastinal and hilar contours are normal . Transvenous atrioventricular pacer leads follow their expected courses .
    OUTPUT:
    
Mild pulmonary edema , improved since ___ . Moderate cardiomegaly stable .