Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of a left chest tube with decreased size of the left pleural effusion . There is minimal residual fluid and probable atelectasis at the left lung base . No discrete pneumothorax is identified . The appearance of the right lung unchanged . Interval placement of a left chest tube with
    OUTPUT:
    
Decreased amount of left pleural fluid status post placement of a left chest tube . No discrete pneumothorax identified . The appearance of the right lung is unchanged .