Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC is again seen with tip overlying the upper SVC . Left pigtail catheter is no longer visualized . There is near complete opacification of the left hemi thorax . There is no pneumothorax . The right lung is grossly unremarkable noting mild blunting of the right lateral costophrenic angle potentially due to small effusion .
    OUTPUT:
    
Interval progression of left - sided pleural effusion with near complete opacification of the left hemi thorax . Prior left pigtail catheter is no longer visualized .