Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval mild improvement in the bilateral parenchymal opacities , now indicating moderate pulmonary edema . Cardiomediastinal and hilar contours are stable with moderate cardiomegaly and stable tortuosity of the descending aorta . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Slight interval improvement in bilateral opacities , indicating moderate pulmonary edema .