Gliomatosis cerebri | Neoplasms, Neuroepithelial | Neuroepithelial Tumors | Neuroepithelial Tumor | Tumor, Neuroepithelial | Tumors, Neuroepithelial | Neuroepithelial Neoplasms | Neoplasm, Neuroepithelial | Neuroepithelial Neoplasm | Spongioblastoma, Polar | Polar Spongioblastoma | Polar Spongioblastomas | Spongioblastomas, Polar | Gliomatosis Cerebri | Astroblastoma | Astroblastomas | Ependymoastrocytoma | Ependymoastrocytomas |