Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of the right hemidiaphragm is again seen . An air bronchogram is seen behind the left heart . This has been present on prior chest x-rays . Size of the right effusion and collapsed right lower lobe is essentially unchanged since the prior chest x-ray . However , on today 's film , there is suggestion of an air bronchogram on the left and consolidation in this region may be present .
    OUTPUT:
    
Left lower lobe consolidation may be present , which was not present at the time of the CT of ___ .