has characteristic has characteristic ependymal tumor low grade ependymoma ependymoma https://www.malacards.org/card/benign_ependymoma MESH:D004806 WHO grade II ependymal tumour ependymoma, familial clear cell ependymoma (histologic variant) WHO grade II ependymal tumor DOID:4844 GARD:0006353 A WHO grade II, slow growing tumor of children and young adults, usually located intraventricularly. It is the most common ependymal neoplasm. It often causes clinical symptoms by blocking cerebrospinal fluid pathways. Key histological features include perivascular pseudorosettes and ependymal rosettes. (WHO) EFO:1000028 MedDRA:10014967 benign ependymoma tanycytic ependymoma (histologic variant) MONDO:0016698 papillary ependymoma (histologic variant) WHO grade II ependymal neoplasm ependymoma, benign ONCOTREE:EPM UMLS:C0014474 MEDGEN:41825 NANDO:2200088 ependymoma Orphanet:251636 ICDO:9391/3 NCIT:C3017 grade II glioma tumor grade 2, general grading system