Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Childhood Central Nervous System Germ Cell Tumors ?
    ### Response:
    Signs and symptoms of childhood CNS germ cell tumors include unusual thirst, frequent urination, early puberty, or vision changes. Signs and symptoms depend on the following:         - Where the tumor has formed.    - The size of the tumor.    - Whether the tumor makes hormones.
    