Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with previous examination , pulmonary edema and extensive bibasilar opacification appear slightly worse . Dobhoff tube and scoliosis appear unchanged .
    OUTPUT:
    
Pulmonary edema and extensive bibasilar opacification appear slightly worse . In view of extensive pulmonary changes , it is impossible to exclude super infection .