Mixed gliomas overview

Overview
Oligoastrocytomas are a subset of brain tumor that present with an appearance of mixed glial cell origin, astrocytoma and oligodendroglioma. Often called a "mixed 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.