Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is increased perihilar opacity when compared to prior . This could potentially be posttreatment changes noting that underlying mass lesion or infection can not be excluded . Right pleural thickening is seen circumferentially . Increased opacity projecting over the lower lobes on the lateral could be due to pleural fluid or thickening although underlying consolidation is not excluded . The left lung is clear . No acute osseous abnormality is detected .
    OUTPUT:
    
Increased density in the right hilum potentially related to post treatment changes noting that superimposed infection or progression of disease is not excluded . No other change .