Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Despite the presence of a left basilar chest tube , the large left pleural effusion has increased , and now contributes to near complete opacification of the left hemithorax . Given the lack of appreciable mediastinal shift , there is also likely increased ipsilateral atelectasis . The right lung remains clear . There is no pneumothorax . Metallic clips in the right upper quadrant indicate prior cholecystectomy .
    OUTPUT:
    
A combination of increased large left pleural effusion and worsening atelectasis causes new near complete opacification of the left hemithorax .