Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube and NG tube has been removed since the previous exam . Mild bibasilar opacities , which is mostly atelectasis , are unchanged since ___ , but worse than ___ . A superimposed infection can not be excluded in appropriate clinical setting . Moderate cardiac enlargement is unchanged . There is no pneumothorax . There is mild cardiac congestion without pulmonary edema .
    OUTPUT:
    
1 . Tubes and lines have been removed . 2 . Bibasilar opacities are unchanged since ___ , but worse than ___ . They are probably atelectasis ; however , superimposed infection can not be excluded .