Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unchanged . A loculated right pleural effusion is unchanged in appearance from ___ . Extensive fibrotic right parenchymal changes and a perihilar right - sided mass are stable in appearance and better evaluated on CT from ___ . There is subtly increased right infrahilar opacity compared to the prior radiograph . As before , there is mild hyperinflation of the left lung , not significantly changed . There is a small rounded lucency at the apex of the right lung suggesting a small pneumothorax .
    OUTPUT:
    
1 . Subtly increased opacity in the right infrahilar region may be related to post treatment changes or a focus of infection in the appropriate clinical setting . 2 . Loculated right pleural effusion is stable . 3 . Small right apical pneumothorax .