Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . When compared to prior , there has been significant interval enlargement of bilateral pleural effusions which are now moderate in size . Underlying airspace disease is also possible . Superiorly , however , the lungs are grossly clear . Cardiac silhouette is difficult to assess given the size of effusions . Osseous and soft tissue structures are unchanged .
    OUTPUT:
    
Significant interval increase in the bilateral pleural effusions since prior exam with possible underlying airspace disease not excluded .