Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest tube coiled the medial left lower hemi thorax without increasing pneumothorax . The appearance of the lung fields is without significant change . There may be slight increase in blunting of the left costophrenic angle , may be due to atelectasis or small pleural effusion . Otherwise , no significant interval change .
    OUTPUT:
    
Possible slight the increase in blunting of the left costophrenic angle which may be due to a small pleural effusion or atelectasis . No other significant change .