A glioma is a type of brain tumor that originates in the glial cells, which are the supportive cells of the central nervous system. These tumors can occur in various parts of the brain and can be either benign (non-cancerous) or malignant (cancerous). Gliomas are the most common type of primary brain tumors, accounting for about 30% of all brain tumors.
There are several synonyms for glioma, which are alternative terms used to describe this type of brain tumor. Some of the commonly used synonyms include:
- Astrocytoma: This is a type of glioma that develops from astrocytes, a specific type of glial cell. Astrocytomas can be low-grade (slow-growing) or high-grade (fast-growing and more aggressive).
- Glioblastoma: Also known as glioblastoma multiforme (GBM), this is the most aggressive and malignant form of glioma. Glioblastomas are highly invasive and tend to grow rapidly.
- Oligodendroglioma: This type of glioma arises from oligodendrocytes, another type of glial cell. Oligodendrogliomas are typically slow-growing and have a better prognosis compared to other gliomas.
- Ependymoma: Although technically not a glioma, ependymomas are sometimes included in the glioma category. These tumors develop from ependymal cells, which line the ventricles of the brain and the central canal of the spinal cord.
It is important to note that gliomas can vary in terms of their location, grade, and aggressiveness. The specific type of glioma and its characteristics play a crucial role in determining the treatment options and prognosis for patients.