Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent complete opacification of the left semi thorax , now with the pigtail catheter overlying the left lung . The right lung is clear . There is minimal mediastinal shift towards the right . No evidence of pneumothorax .
    OUTPUT:
    
Status post pigtail catheter placement overlying the left lung , however with persistent complete opacification of the left lung .