Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Myxopapillary ependymoma ?
    ### Response:
    Myxopapillary ependymoma (MEPN) is a slow-growing ependymoma (a type of glioma, which is a tumor that arises from the supportive tissue of the brain). They tend to occur in the lower part of the spinal column and are usually considered to be benign, low-grade or grade I tumors.
    