Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in retrocardiac opacity . Stable , small bilateral pleural effusions , left greater than right . Cardiomediastinal and hilar contours are normal . Interval improvement in pulmonary edema . Mild , bilateral parenchymal scarring is stable . There is no pneumothorax .
    OUTPUT:
    
Interval improvement in mild pulmonary edema . Stable , small bilateral pleural effusions , left greater than right .