Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is in unchanged position . Bilateral pulmonary opacities are more pronounced than the recent comparison radiograph ; given the interval change this could reflect edema or aspiration superimposed upon the atelectasis and effusion seen on chest CT . The right upper lung opacity on chest CT is not as well seen on these films in part due to external material projecting over the right lateral upper chest . No pneumothorax is seen . Cardiac size is stable .
    OUTPUT:
    
1 . No pneumothorax . 2 . Worsened opacities likely due to edema without change to atelectasis and effusion as on chest CT . Concomitant infectious process would be difficult to exclude .