Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube ends at the level of the clavicles . Accessed left pectoral MediPort terminates in the right atrium . Nasogastric tube courses below the hemidiaphragm , tip not visualized . Lung volumes are low . Moderate bilateral layering pleural effusions are unchanged . An airspace opacity at the right lung base has increased . Increased retrocardiac airspace opacification with air bronchograms may also be due to aspiration or pneumonia .
    OUTPUT:
    
Increased bibasilar airspace opacities are likely due to evolving aspiration or pneumonia . Stable moderate layering pleural effusions .