Medical Q&As

Low grade glioma - what is it?

I would like some information on low grade gliomas?

The substance of the brain consists of neurons or nerve cells and glia, which is the supportive tissue. A glioma is a tumour originating in the supportive tissue of the brain or spinal cord. There are three types of cell in the supportive tissue: astrocytes, oligodendrocytes and ependymal cells. Gliomas arising in each of these cells are known as an astrocytoma, oligodendroglioma and an ependymoma. The astrocytoma and oligodenroglioma are categorised as low grade gliomas. Approximately 20% of primary brain tumours are low grade gliomas. The treatment of choice with these tumours is surgery, assuming that the tumour is in an accessible part of the brain. If the tumour is inaccessible it is usually treated with radiotherapy. Chemotherapy is usually not necessary for treating low grade gliomas.