Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The pleural effusion seen within the right lower lobe on the previous study is relatively unchanged . There is also a density noted within the right upper lobe projecting over the fifth posterior rib that was present on the previous study as well . Heart size and cardiomediastinal contours are unremarkable . Left lung is clear . There are no bony abnormalities .
    OUTPUT:
    
1 . Stable right - sided pleural effusion . 2 . Known rounded density within the right upper lobe .