Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube and right PICC line are unchanged in position . The tip of the NG tube is not identified on this study . Since the most recent prior radiographs , there has been no significant change . Again seen are bibasilar opacities which may represent atelectasis ; however , pneumonia can not be entirely excluded . Cardiomediastinal silhouette is unchanged . There is no pneumothorax .
    OUTPUT:
    
No significant interval change .