What is a mixed glioma?
What is a mixed glioma?
Listen to pronunciation. (mikst glee-OH-muh) A brain tumor that forms from more than one type of brain cell, usually astrocytes and oligodendrocytes.
Is Oligoastrocytoma malignant?
An oligoastrocytoma is a “mixed glioma” tumor, which contains both abnormal oligodendroglioma and astrocytoma cells. Oligoastrocytomas (grade II) are considered low-grade tumors. They generally grow at a slower rate than anaplastic oligoastrocytomas (grade III), which are malignant.
What is the life expectancy of someone with oligoastrocytoma?
In a survival analysis of 71 patients felt to have oligoastrocytomas based on a review of their histological material, Shaw et al. reported a median survival time of 2.8 years for those with anaplastic tumors [2]. The patients with low-grade oligoastrocytoma had a median survival time of 7.1 years.
What is a Grade II oligoastrocytoma?
Oligoastrocytoma. Gliomas are tumors that come from the glial, or supportive, cells of the brain. There are several different types of gliomas. An oligoastrocytoma is a “mixed glioma” tumor, which contains both abnormal oligodendroglioma and astrocytoma cells. Oligoastrocytomas (grade II) are considered low-grade tumors.
What is the prognosis of oligodendroglioma?
Prognosis: Low-grade oligodendrogliomas tend to be slow growing tumors. Anaplastic oligodendrogliomas are more aggressive tumors which grow more quickly. Oligoastrocytoma growth generally depends on the percent of astrocytoma in the tumor, as astrocytomas tent to grow more rapidly than oligodendrogliomas.
Which survival patterns resemble astrocytoma more than oligodendroglioma?
Oligoastrocytoma survival patterns resemble astrocytoma more than oligodendroglioma. With tumors < 5 cm, oligoastrocytoma was more similar to oligodendroglioma. With tumors ≥ 5 cm, oligoastrocytoma was more similar to astrocytoma.
