Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left chest tube , which appears unchanged in comparison to the prior chest radiograph . There is a small residual left apical pneumothorax , which is also unchanged . There is bibasilar atelectasis with increasing density in the left midlung . There is a moderate left pleural effusion . Heart size is stable . The mediastinal and hilar contours are stable . The pulmonary vasculature is normal . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Chest tube in appropriate position with unchanged small left apical pneumothorax . 2 . Increasing opacification in left midlung concerning for worsening left pleural effusion with atelectasis versus underlying pneumonia .