Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the left chest tube is not well seen on this radiograph . There is no significant interval change in the appearance of the left lung including a small left pleural effusion . The appearance of the right lung parenchyma is also unchanged . The exact positioning of the percutaneous nephrostomy tubes can not be determined on this single view chest radiograph .
    OUTPUT:
    
No significant interval change since the prior radiograph .