Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the stages of Childhood Central Nervous System Germ Cell Tumors ?
    ### Response:
    Key Points
								                    - Childhood central nervous system (CNS) germ cell tumors rarely spread outside of the brain and spinal cord.
								                
								                
								                    Childhood central nervous system (CNS) germ cell tumors rarely spread outside of the brain and spinal cord.
    