Source:http://linkedlifedata.com/resource/umls/id/C0334578
NCI: A rare variant of ependymoma characterized by well formed papillae. Tumor cell processes abutting capillaries are usually GFAP-positive. Differential diagnoses include choroid plexus papilloma, papillary meningioma and metastatic papillary carcinomas. (Adapted from WHO)