MONDO_0016700 (anaplastic ependymoma) is a rare, malignant type of ependymoma that most often arises in the supratentorial region of the brain of children and young adults and that manifests with variable symptoms including headaches, nausea, vision impairment, memory loss and difficulty walking. Also known as: WHO grade III ependymal neoplasm, WHO grade III ependymal tumor, WHO grade III ependymal tumour, anaplastic ependymal neoplasm, anaplastic ependymal tumor, anaplastic ependymal tumour, ependymoma, anaplastic, malignant, ependymoma, malignant.