Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . Since prior , there has been interval enlargement of the right - sided pleural effusion which had previously been small and is now moderate . Underlying atelectasis suspected with consolidation not excluded . The left lung is clear without consolidation or effusion . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Interval enlargement of the right - sided pleural effusion since ___ . There is suspected underlying atelectasis , underlying infection is not excluded .