Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right IJ central venous catheter ends in the upper SVC . A nasogastric tube courses below the hemidiaphragm , tip not visualized . The ET tube ends at the level of the clavicles . Lung volumes are low . Bibasilar subsegmental atelectasis is unchanged . Bilateral peripheral predominant airspace opacities are not changed in extent or distribution since the study of 1 day prior . There is no pneumothorax .
    OUTPUT:
    
No appreciable interval change in peripheral bilateral airspace opacities since the study of 1 day prior , which may be due to multifocal pneumonia or septic emboli . However , there has been interval improvement since ___ .