What is an Oligoastrocytoma?

An oligoastrocytoma is a type of glioma tumor, meaning it is developed from glial cells (supportive cells) of the brain. An oligoastrocytoma is considered a “mixed tumor” because it originates from oligodendrocytes and astrocytes, the cells in the brain that support and insulate nerve cells.

Oligoastrocytomas are considered low-grade tumors and generally grow at a slower rate than high-grade, malignant tumors.

These tumors are most commonly found in the frontal and temporal lobes of the brain.

What causes an oligoastrocytoma? Who is affected?

The cause of an oligoastrocytoma is unknown.

This tumor occurs primarily in adults age 30 to 50 but can also be found in children.

What are the symptoms of an oligoastrocytoma?

Symptoms vary by location and size of the tumor. The most common symptom of an oligoastrocytoma is seizures, but children may experience headaches and personality changes.

How is an oligoastrocytoma treated?

The standard treatment for an oligoastrocytoma is to surgically remove as much of the tumor as possible and perform a biopsy to confirm a diagnosis.

If the tumor is not completely removed, patients may be treated with chemotherapy or radiation therapy to kill the remaining cancer cells. Chemotherapy may be used in very young children to delay radiation therapy and its late-effects.