Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with the study of ___ , there is little overall change . Again there are diffuse bilateral coarse reticular opacifications consistent with the pulmonary fibrosis . Continued low lung volumes . The overall appearance of the heart and lungs is essentially unchanged . The mediastinal lucency at the left of the trachea has virtually cleared , reflecting either improved pneumomediastinum or less air within the normal esophagus .
    OUTPUT:
    
Little overall change in the severe interstitial fibrosis .