tanycytic ependymoma https://www.malacards.org/card/tanycytic_ependymoma MEDGEN:237159 A variant of ependymoma, often found in the spinal cord, with tumor cells arranged in fascicles of variable width and cell density. Ependymal rosettes are generally absent, so this lesion must be distinguished from astrocytic neoplasms, but its EM characteristics are ependymal. (Adapted from WHO.) tanycytic ependymoma DOID:5504 GARD:0023519 MONDO:0003474 UMLS:C1370500 NCIT:C6903 ependymoma