. _:vb50954005 . "NCI:C5098"^^ . . . . _:vb50954006 . "disease_ontology"^^ . "A high grade ependymoma that is characterized by abnormal growth of the neuroepithelial lining of the ventricular system, has_material_basis_in abnormally proliferating cells derives_from ependymal cells."^^ . "UMLS_CUI:C1332609"^^ . "brain stem ependymoma"^^ . _:vb50954004 . _:vb50954006 _:vb50954005 . _:vb50954002 _:vb50954006 . _:vb50954003 . _:vb50954002 . _:vb50954003 . . _:vb50954004 . _:vb50954003 . _:vb50954006 _:vb50954003 . _:vb50954002 . "SNOMEDCT_US_2021_09_01:107561000119107"^^ . _:vb50954004 . "Ependymoma of the Brainstem"@en . _:vb50954002 . _:vb50954005 . _:vb50954003 . _:vb50954005 _:vb50954004 . _:vb50954004 . "DOID:5508"^^ .