Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is near complete opacification of the left hemi thorax , compatible with large pleural effusion and collapse . The right lung is clear . Patient is status post median sternotomy and CABG , with intact median sternotomy wires . No pneumothorax .
    OUTPUT:
    
1 . New complete opacification of the left hemithorax is compatible with large pleural effusion and collapse . 2 . The right lung is clear .