carcinoma cerebral ventricle cancer malignant ependymoma A malignant glioma that is derived from ependymal cells, a type of glial cell, located_in ventricle lining within the central part of the brain. NCI:C6770 DOID:0060107 disease_ontology DOID:5074 Ependymal neoplasm UMLS_CUI:C1333407 ependymal tumors