Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the stages of Langerhans Cell Histiocytosis ?
    ### Response:
    Key Points
                    - There is no staging system for Langerhans cell histiocytosis (LCH).    - Treatment of LCH is based on where LCH cells are found in the body and how many body systems are affected.
                
                
                    There is no staging system for Langerhans cell histiocytosis (LCH).
    