Oligoastrocytomas are a subset of brain tumor that present with an appearance of<unk>  glial cell origin, astrocytoma and oligodendroglioma. Often called a<unk>  glioma", about 2.3% of all reported brain tumors are diagnosed as oligoastrocytoma. The median age of diagnosis is 42 years of age.
Oligoastrocytomas, like astrocytomas and oligodendrogliomas, can have malignant (anaplastic) histology. However, lower grades can have less aggressive biology.
Mixed gliomas
High grade astrocytoma
Protoplasmic astrocytoma
Glioma
Gemistocytic astrocytoma
Brain Stem Gliomas
Ameloblastoma
Hemangioblastoma