Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Craniopharyngioma ?
    ### Response:
    A craniopharyngioma is a slow-growing benign tumor that develops near the pituitary gland (a small endocrine gland at the base of the brain) and the hypothalamus (a small cone-shaped organ connected to the pituitary gland by nerves). This tumor most commonly affects children between 5 and 10 years of age; however, adults can sometimes be affected.
    