Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been slight interval withdrawal of a left chest tube , which projects over the left upper lung . Small to moderate effusion with an air - fluid level in the left lateral midlung is similar to the prior study . There is no focal consolidation or pulmonary edema . The right lung is clear . The right PICC line terminates in the cavoatrial junction , unchanged .
    OUTPUT:
    
Interval slight withdrawal of the left chest tube , otherwise unchanged appearance of the chest including a small to moderate left effusion and an air - fluid level projecting over the left mid lung consistent with the left hilar pneumothorax as seen on recent chest CT .