The same tumor in the pineal is a pinealoblastoma. Neuroblastoma, medulloepithelioma, ependymoblastoma, etc. A rare tumor of childhood expressing embryonic medullary epithelium while retaining the potential for divergent differentiation to neurons and the full spectrum of glia. All are malignant, with high mortality. Histologically have a glandular appearance.
Differential diagnosis is with choroid plexus carcinoma or anaplastic ependymoma.
A rare, malignant embryonal neoplasm composed of neuroblasts or cells with limited neuronal differentiation. Histologically the tumor is lobular, has high cellularity, and resembles medulloblastoma. Local recurrence after excision is common. CSF dissemination a recognized problem. An entity distinct from anaplastic ependymoma.