Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right - sided chest tube with substantial decrease in the right - sided pleural effusion . There is a small amount of loculated air adjacent to the chest tube on the current study and a small amount of fluid tracking superiorly over the right chest wall . No subcutaneous emphysema seen . Left lung appears clear .
    OUTPUT:
    
Status post chest tube placement .