Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following right thoracocentesis , moderate - sized pleural effusion has decreased . Right apical opacity corresponding to known mass lesion better evaluated on a chest CT dated ___ is unchanged . Small nodular density in the right lower lung suggesting a calcified granuloma is redemonstrated . The left lung is clear . Heart is normal size . The hilar and mediastinal contours are unremarkable .
    OUTPUT:
    
Following right - sided thoracocentesis , moderate right pleural effusion has decreased . Upper lung opacity from a known lung mass is unchanged .