Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there has been no significant change . The extent and severity of pre-existing bilateral right basal and left perihilar parenchymal opacities remain unchanged . The morphology and location of these opacities suggest a combination of pulmonary edema and / or pneumonia . Cardiomegaly is stable . No pleural effusions or pneumothorax . Monitoring and support devices remain in unchanged position .
    OUTPUT:
    
Stable diffuse bilateral opacities suggestive of pulmonary edema and / or pneumonia .