<unk> s fall under the category of high grade gliomas (WHO grade III-IV), which are pathologically undifferentiated gliomas that carry a poor clinical prognosis. Unlike glioblastomas (WHO grade IV),<unk> s lack vascular proliferation and necrosis on pathologic evaluation. Compared to grade II tumors,<unk> s are more cellular, demonstrate more atypia, and mitoses are seen.
Anaplastic astrocytoma
Fibrillary astrocytoma
Neurothekeoma
Subependymal giant cell astrocytoma
Giant-cell glioblastoma
Hemangioblastoma
Glioblastoma
Pilocytic astrocytoma