Glioma: grades, prognosis and treatment options
Reviewed on July 17, 2026
Being told you have a glioma often brings fear and many questions, which is entirely understandable. Even so, glioma is a broad term covering very different tumors, with treatments and outcomes that vary widely. Understanding your tumor's type and grade helps turn uncertainty into more informed decisions, always made together with a trusted multidisciplinary team.
What a glioma is
Gliomas are tumors that arise from glial cells, which support the neurons in the brain and spinal cord. They include astrocytomas, oligodendrogliomas and ependymomas, among others. Some grow slowly over years, while others behave more aggressively.
Today the diagnosis does not rely only on how the tumor looks under the microscope. Molecular markers, such as the IDH mutation and 1p/19q codeletion, help classify the tumor far more precisely and directly influence treatment and prognosis.
Grades and what they mean
Gliomas are graded from 1 to 4. Lower grades tend to grow slowly and, in some cases, may be monitored for a time. Higher grades, such as glioblastoma (grade 4), grow faster and usually require combined, more intensive treatment.
It helps to remember that grade is only part of the story. Age, overall health, tumor location and the molecular profile all weigh heavily on planning and on realistic expectations.
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Request a second opinionTreatment options
Surgery is often the first step, aiming to safely remove as much of the tumor as possible while preserving important functions such as speech and movement. Techniques like brain mapping and intraoperative MRI help with this balance.
Depending on the type and grade, surgery may be followed by radiation therapy and chemotherapy, such as temozolomide. Decisions are individualized and discussed together by the neurosurgeon, oncologist and radiation oncologist, taking your values and goals into account.
Why a second opinion helps
In oncology, seeking a second opinion is common, encouraged and part of responsible care. For gliomas, an independent review can confirm the tumor type and grade, check whether the essential molecular tests were done and assess whether the treatment plan aligns with best practice.
A careful review by an independent specialist can bring reassurance when the plan is confirmed, or point to alternatives worth discussing. The goal is never to replace your own doctor, but to add information so you can decide with greater confidence.
Frequently asked questions
Is every glioma cancer?
Not all behave the same way. Some low-grade gliomas grow slowly, while others are more aggressive. The exact type and molecular profile define behavior and treatment, which is why a detailed diagnosis matters so much.
Can the tumor be removed completely?
It depends on the location and its relationship to areas responsible for important functions. The aim is to safely remove as much as possible. Even when full removal is not feasible, surgery can help with diagnosis and disease control.
How do I submit my case for a second opinion?
On Revidra you upload your imaging, reports and pathology results through the platform. An independent specialist reviews the material and you receive a structured written opinion covering diagnosis, grade and treatment options.
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Request a second opinionEducational content, for informational purposes. It does not replace consultation, diagnosis or treatment with a physician, nor does it constitute a teleconsultation or emergency care.