Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single view chest radiograph shows interval increase of left lung opacification , likely for increase of pleural effusion . The left pleural drain tip ends medially in the left upper lung and might be intrafissural , its function should be checked . Right lung volumes still low with minimal right base atelectasis , but without consolidation . Heart size appears still mildly enlarged , partially obscured by the left pleural effusion . There is no pneumothorax . Left chest wall subcutaneous emphysema is unchanged .
    OUTPUT:
    
Interval increase of left lung opacification likely for increased left pleural effusion . The pleural drain might be in the left major fissure and therefore not working properly .