ependymal tumor anaplastic ependymoma https://github.com/monarch-initiative/mondo/issues/4450 https://rarediseases.info.nih.gov/diseases/10634/anaplastic-ependymoma https://www.malacards.org/card/anaplastic_ependymoma UMLS:C0280788 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. anaplastic ependymoma anaplastic ependymal tumour ependymal tumors Orphanet:251646 ONCOTREE:APE WHO grade III ependymal neoplasm MONDO:0016700 ependymal tumours undifferentiated ependymal neoplasm undifferentiated ependymal tumour anaplastic ependymal neoplasm WHO grade III ependymal tumour high-grade ependymoma anaplastic ependymal tumor ICDO:9392/3 DOID:5889 MEDGEN:128891 ependymoma, anaplastic, malignant MedDRA:10014968 ependymoma, malignant GARD:0010634 undifferentiated ependymoma DOID:5074 WHO grade III ependymal tumor malignant ependymoma NCIT:C4049 undifferentiated ependymal tumor anaplastic cancer grade III glioma