label: papillary ependymoma
label_lc: papillary ependymoma
description: "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 carcinoma. (Adapted from WHO)"