Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is near complete opacification of the left hemi thorax , with a small amount of residual aerated left upper lobe . The loculated component of the left pleural effusion has increased over the interval . A left - sided pleural drainage catheter is again seen . Otherwise , the right lung is essentially clear , and there is flattening of the right hemidiaphragm .
    OUTPUT:
    
Enlarging loculated component of left pleural effusion .