Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been significant interval increase an opacity over the left hemi thorax , possibly due to combination of increased pleural effusion , which may be partially loculated , underlying atelectasis , disease spread , underlying consolidation not excluded . There is slight rightward mediastinal shift . Right hilar mass is re - demonstrated . No large right pleural effusion is seen . No pneumothorax identified .
    OUTPUT:
    
Significant interval increase in opacity over the left hemi thorax likely combination of increased pleural effusion , partially loculated , atelectasis , disease progression , underlying consolidation not excluded . Re - demonstrated right hilar mass .