Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with the study of ___ , there has been substantial decrease in the right lower lung opacification medially . Moderate residual persists . The right upper to mid lung nodule has decreased in size . Continued blunting of the right costophrenic angle suggests pleural thickening , since there is no filling of the posterior costophrenic sulcus on the lateral view .
    OUTPUT:
    
Decreased size and density of the previously described mass and nodule .