Treatment FAQ

why is treatment of glioma dangerous

by Tillman Cruickshank Published 3 years ago Updated 2 years ago
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Symptoms

A glioma is a tumor that forms in the brain or spinal cord. There are several types, including astrocytomas, ependymomas and oligodendrogliomas. Gliomas can affect children or adults. Some grow very quickly. Most people with gliomas need a combination of treatments such as surgery, radiation therapy and chemotherapy. What is a glioma?

Causes

Surgery. Surgery to remove a glioma carries risks, such as infection and bleeding. Other risks may depend on the part of your brain in which your tumor is located. For instance, surgery on a tumor near nerves that connect to your eyes may carry a risk of vision loss.

Complications

Why is glioblastoma so hard to treat? Surgical removal of the entire tumour is almost impossible, and in most cases less than 90% can be removed. Glioblastoma is often referred to as having finger-like tentacles that extend some distance from the main tumour mass into surrounding normal brain tissue.

What is a glioma and how is it treated?

The chemotherapy drug used most often to treat gliomas is temozolomide (Temodar), which is taken as a pill. Side effects of chemotherapy depend on the type and dose of drugs you receive. Common side effects include nausea and vomiting, headache, hair loss, fever, and weakness.

What are the risks of surgery for glioma?

Why is glioblastoma so hard to treat?

What are the side effects of chemotherapy for gliomas?

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Why is glioma fatal?

Part of the reason why glioblastomas are so deadly is that they arise from a type of brain cell called astrocytes. These cells are shaped like a star, so when the tumors form they develop tentacles, which makes them difficult to remove surgically. Additionally, the tumors advance rapidly.

Are gliomas life-threatening?

A glioma can affect your brain function and be life-threatening depending on its location and rate of growth. Gliomas are one of the most common types of primary brain tumors.

Why can't we cure glioblastoma?

The type of brain tumor known as glioblastoma (GBM) is one of the most difficult cancers to treat. Complete removal by surgery is impossible because of where and how these tumors infiltrate brain tissue.

How successful is glioma treatment?

Is GBM treatment effective? The current standard glioblastoma multiforme treatment is effective and has resulted in more people living two, three, four years and longer. Unfortunately, this regimen is not curative, meaning it does not kill every tumor cell.

What is the most deadliest brain tumor?

The most common form of malignant brain cancer—called a glioblastoma—is notoriously wily and considered the deadliest human cancer. Glioblastomas charge their way into normal brain tissue diffusely and erratically, making them surgical nightmares.

Can gliomas be completely removed?

Surgery to remove as much of the tumor as possible is usually the first step in treating most types of gliomas. In some cases, gliomas are small and easy to separate from surrounding healthy brain tissue, which makes complete surgical removal possible.

Can glioblastoma be cured if caught early?

Identifying early-stage glioblastomas remains difficult. However, the development of technologies such as liquid biopsy[10] and the detection of serum biomarker[11] may enable early diagnosis and early treatment of glioblastoma in the future and may improve the prognosis of glioblastoma.

What is the most promising treatment for glioblastoma?

A clinical trial has found that selinexor, the first of a new class of anti-cancer drugs, was able to shrink tumors in almost a third of patients with recurrent glioblastoma, an aggressive brain cancer.

Has anyone recovered from glioblastoma?

A very small percentage of glioblastoma cases showed >3 years survival. There have been exceptional cases of long-survival spanning 10 years or more, without tumor recurrence, so as to deem those affected 'cured'.

What is the best treatment for glioma?

The best treatment for glioblastoma currently is surgery to remove as much of the tumour as possible, followed by a combination of chemotherapy and radiotherapy.

Is glioblastoma always fatal?

Glioblastoma incidence is very low among all cancer types, i.e., 1 per 10 000 cases. However, with an incidence of 16% of all primary brain tumors it is the most common brain malignancy and is almost always lethal [5,6].

Can surgery cure glioblastoma?

Glioblastoma is not a disease that can be cured with surgery alone, however safely performed maximal surgical resection is shown to significantly increase progression free and overall survival while maximizing quality of life.

How to remove glioma?

Surgery. Surgery to remove as much of the tumor as possible is usually the first step in treating most types of gliomas. In some cases, gliomas are small and easy to separate from surrounding healthy brain tissue, which makes complete surgical removal possible.

How to learn about gliomas?

Learn enough about gliomas to make decisions about your care. Ask your doctor about your specific type of brain tumor, including your treatment options and, if you like, your prognosis. As you learn more about brain tumors, you may become more confident in making treatment decisions. Keep friends and family close.

What is a biopsy of glioma?

Collecting and testing a sample of abnormal tissue (biopsy). Depending on the location of the glioma, a biopsy may be performed with a needle before treatment or as part of an operation to remove the brain tumor. A stereotactic needle biopsy may be done for gliomas in hard-to-reach areas or very sensitive areas within your brain ...

How scary is it to have a brain tumor?

It can make you feel like you have little control over your health. But you can take steps to cope with the shock and grief that may come after your diagnosis. Consider trying to:

How to rule out brain tumors?

To rule out other types of brain tumors that may have spread from other parts of the body, your doctor may recommend tests and procedures to determine where the cancer originated.

What tests can be done to check for brain tumor?

Problems in one or more of these areas may provide clues about the part of your brain that could be affected by a brain tumor. Imaging tests.

What kind of doctor would you see if you have a brain tumor?

If your primary care doctor suspects you have a brain tumor, you may be referred to a specialist who is trained in treating brain and nervous system disorders (neurologist). Your doctor may recommend a number of tests and procedures, including:

Overview

A glioma is a tumor that forms when glial cells grow out of control. Normally, these cells support nerves and help your central nervous system work. Gliomas usually grow in the brain, but can also form in the spinal cord.

Symptoms and Causes

Research suggests that changes to DNA lead to the development of brain tumors and spinal cord tumors like gliomas. Our genes contain DNA. They give instructions to cells about how to grow and multiply. Mutations, or changes, to the DNA in our genes can cause cells to multiply out of control.

Diagnosis and Tests

Your healthcare provider evaluates your symptoms and reviews your medical history. They’ll also do a complete physical and neurological exam.

Management and Treatment

Your treatment plan for a glioma depends on several factors, including:

Prevention

Most risk factors for gliomas, such as age and race, aren’t controllable. But early detection and treatment of low-grade gliomas may slow or prevent their progression into high-grade gliomas. If brain tumors run in your family, you may want to consider genetic testing.

Living With

After treatment, stay in close communication with your healthcare provider. You’ll need regular imaging scans to see if the cancer returns.

Surgery for Gliomas

Surgery is the most common initial treatment for gliomas. A biopsy taken during surgery provides tissue samples to the pathologist, who will then be able to make an accurate diagnosis of the tumor's composition, which is critical to getting the best treatment.

Radiation Therapy for Gliomas

Radiation therapy is performed after surgery for high-grade gliomas. It is also used to treat gliomas in locations where surgery is not safe and for recurrent gliomas.

Chemotherapy for Gliomas

Chemotherapy, including GLIADEL® wafers and targeted therapy, is recommended for some high-grade gliomas after surgery and radiation therapy.

What is the best treatment for glioma?

Immunotherapy for Glioma. Immunotherapy triggers the body’s immune system to fight cancer cells. This new treatment approach is showing promise for the treatment of some gliomas.

What kind of doctor do you see for brain tumors?

Before we recommend any treatment, you will meet with a surgeon. You will most likely also see a medical oncologist .

Is glioblastoma surgery safe?

At MSK, glioma surgery is more effective and safer than ever before. Our neurosurgeons are skilled at using advanced technologies to help protect your vision, movement, and other important functions during brain surgery. Glioblastoma tumors are challenging to remove completely with surgery.

Can radiation therapy kill glioma?

Radiation Therapy for Glioma. Radiation therapy can shrink or kill tumor cells. We may recommend radiation therapy as the first treatment, followed by surgery, chemotherapy, or both. We may also recommend radiation for tumors that come back after treatment.

Can you get glioma surgery after radiation?

Chemotherapy for Glioma. Chemotherapy may be given after surgery, usually in combination with radiation. This is an option after it is clear exactly where the tumor is located and the findings from surgery are in. Chemotherapy is sometimes given before surgery to shrink a tumor so it will be easier to remove.

How does glioma affect the brain?

A glioma can affect your brain function and be life-threatening depending on its location and rate of growth. Gliomas are one of the most common types of primary brain tumors. The type of glioma you have helps determine your treatment and your prognosis. In general, glioma treatment options include surgery, radiation therapy, chemotherapy, ...

What are the risk factors for gliomas?

But there are some factors that may increase your risk of a brain tumor. Risk factors include: Your age. Your risk of a brain tumor increases as you age. Gliomas are most common in adults between ages 45 and 65 years old.

What are the different types of glioma?

Types of glioma include: Astrocytomas, including astrocytoma, anaplastic astrocytoma and glioblastoma. Ependymomas, including anaplastic ependymoma, myxopapillary ependymoma and subependymoma. Oligodendrogliomas, including oligodendroglioma, anaplastic oligodendroglioma and anaplastic oligoastrocytoma. A glioma can affect your brain function and be ...

How are gliomas classified?

Gliomas are classified according to the type of glial cell involved in the tumor, as well as the tumor's genetic features, which can help predict how the tumor will behave over time and the treatments most likely to work. Types of glioma include:

What is malignant glioma?

Close. Malignant glioma cells. Malignant glioma cells. Glioblastoma multiforme (malignant brain tumor) cells. The cells have irregular shapes with fingers that can spread into the brain. Glioma is a type of tumor that occurs in the brain and spinal cord. Gliomas begin in the gluey supportive cells ...

How do you know if you have gliomas?

Common signs and symptoms of gliomas include: Headache. Nausea or vomiting. Confusion or a decline in brain function. Memory loss. Personality changes or irritability. Difficulty with balance. Urinary incontinence.

Where does glioma occur?

Glioma is a type of tumor that occurs in the brain and spinal cord. Gliomas begin in the gluey supportive cells (glial cells) that surround nerve cells and help them function. Three types of glial cells can produce tumors. Gliomas are classified according to the type of glial cell involved in the tumor, as well as the tumor's genetic features, ...

How long can glioblastoma patients live?

Even with this treatment, however, the prognosis for glioblastoma patients is bleak, with only half the patients surviving for 15 months, with less than 5% of patients still alive five years after diagnosis. These are particularly sobering statistics, much worse than other common cancers.

Where is glioblastoma located?

The physical location of glioblastoma within the confined space of the skull, and surrounded by vital normal brain tissue, however, means that even small increases in tumour size can have serious effects on cognitive function or patient survival.

Why is astrocyte cancer so aggressive?

The tumour arises from astrocytes, cells named because of their star shape, that make up the supportive tissue of the brain. These tumours usually grow very fast, and can easily invade surrounding normal brain tissue, making it a particularly aggressive form of cancer where treatment success is still very limited.

Why are chemo drugs so hard to treat?

Another reason they are so tough to treat is that many drugs cannot efficiently enter the brain to act on the tumour. There is a unique barrier, termed the “blood-brain barrier” that limits the passage of molecules, like many chemo drugs, from the bloodstream into the brain.

Can glioblastoma cells be resistant to temozolomide?

However glioblastoma cells are often resistant to temozolomide. Many glioblastomas produce a protein (called MGMT) which can limit the effects of temozolomide. The presence of MGMT can be a good indication of whether a patient will respond to chemo drugs, and thus how long they will survive.

Can glioblastoma be removed?

Surgical removal of the entire tumour is almost impossible, and in most cases less than 90% can be removed. Glioblastoma is often referred to as having finger-like tentacles that extend some distance from the main tumour mass into surrounding normal brain tissue.

Can glioblastoma cause weakness?

While it is important to note the symptoms outlined above can occur for a variety of other reasons, they commonly occur in glioblastoma patients, who, depending on the location of the tumour in the brain, may also have a range of other symptoms, including weakness on one side of the body, memory and speech difficulties, and changes in vision. ...

What is a glioma?

A glioma is a tumor of the central nervous system that arises from glial stem or progenitor cells. Glial cells are a type of cell widely present in the nervous system. Gliomas mostly occur in the brain and, rarely, in the spinal cord. They develop in approximately 6.6 per 100,000 individuals each year. They occur at various ages, depending on the subtype. Developing gliomas can compress areas of the brain where they occur and cause various symptoms including headaches, nausea, vomiting, cognitive impairment, seizures, gait imbalance, language impairment (aphasia), numbness or weakness of one side of the body (hemiparesis), visual changes, and personality changes. The treatment of gliomas often requires a combination of neurosurgical interventions, radiation therapy, and chemotherapy.

What are the symptoms of gliomas?

Developing gliomas can compress areas of the brain where they occur and cause various symptoms including headaches, nausea, vomiting, cognitive impairment, seizures, gait imbalance, language impairment (aphasia), numbness or weakness of one side of the body (hemiparesis), visual changes, and personality changes.

What is diffuse glioma?

Diffuse gliomas are by far the most common glial tumors in adults. They grow diffusively and invade functional tissue of the central nervous system (CNS parenchyma). They can be further divided depending on the type of glial cell they arise from: astrocytic tumors arise from astrocytes, a type of glial cell that is involved in neuron maintenance, in the repair process of brain and spinal cord tissue, and in the formation of the blood-brain barrier. Diffuse astrocytic tumors are further characterized by whether or not they have mutations in IDH1 or IDH2, which are genes involved in cellular metabolism. They can also have mutations in genes such as tumor protein 53 ( TP53, a major tumor suppressor gene), and ATRX, a gene involved in the remodeling of chromatin, a DNA-RNA-protein complex. Glioblastoma (GBM) is the most common and malignant subtype of diffuse glioma (for more information on this specific glioma, choose “glioblastoma multiforme” as your search term in the Rare Disease Database). Diffuse midline glioma is another type of malignant astrocytic glioma (grade IV) and is associated with a mutation called H3-K27M. This mutation affects histones, which are part of a protein complex involved in DNA folding inside the cell.

What is the most common glioma in adults?

Pilocytic astrocytoma is the most common glioma in individuals under age 14 (34.4% of all gliomas) whereas GBM is the most common glioma in adults (56.6% of all gliomas) (for more information on these types of glioma, choose the specific glioma name as your search term in the Rare Disease Database).

How old do you have to be to get glioma?

Gliomas can develop at any age. The average age at which they occur greatly varies depending on the subtype of glioma. For instance, half of pilocytic astrocytomas occur in children less than 12 years of age, while half of glioblastomas occur in individuals aged over 65.

What is the classification of gliomas?

Classification of gliomas is complex and based partly on the microscopic appearance of the tumor (histologic classification) and partly on the gene changes (mutations) that are implicated in tumor development. Differentiation is an important concept for the histologic classification of gliomas and refers to the “specialization” of the cell. For instance, some of the cells in the brain can show neuronal or glial differentiation, while embryonic stem cells are undifferentiated. The histologic classification of gliomas depends on the microscopic similarities of the tumor cells with different subtypes of glial cells (such as astrocytes and ependymal cells), the growth pattern and behavior of the tumor, and the degree of differentiation of cells within the tumor (grade).

How many people develop gliomas in a year?

They develop in approximately 6.6 per 100,000 individuals each year and 2.94 per 100,000 individuals under age 14.

Can MSK be used for glioblastoma?

It is usually the most effective treatment for people with a glioma. MSK neurosurgeons have vast experience with glioblastomas. Studies suggest that people who have brain surgery have the best outcome when the doctor has done the procedure many times before.

Can glioblastoma be treated with neuroendoscopy?

Not every tumor can be treated with a neuroendoscopy. It depends on where the tumor is located. Glioblastoma Surgery. The primary goals of glioblastoma surgery are to relieve pressure in the brain and to safely remove as much of the tumor as possible.

Why do people get glioma?

Other forms of radiation, such as electromagnetic fields, radiation from power lines, and radiofrequency radiation from microwave ovens increase the risk of glioma.

What is glioma in the brain?

Glioma is a type of brain tumor that arises from glial (supporting tissue) cells in the brain and spinal cord. Glial cells are cells with supply the nerve cells with nutrients and help maintain the blood-brain barrier. There are different types of glial cells, and each has a different function. These are called astrocyte, oligodendrocyte, ...

What is a glioma center?

Center. Glioma is a broad term used to describe the different types of glial tumors, which are astrocytoma, oligodendroglioma, and glioblastoma. Gliomas are the commonest type of tumors that originate in the brain. Glioma is a type of brain tumor that arises from glial (supporting tissue) cells in the brain and spinal cord.

How do you know if you have glioblastoma?

Glioblastomas can often have similar symptoms to other gliomas. The symptoms can vary depending on the location and size of the tumor. The symptoms can worsen over time as the tumor grows and invades other surrounding structures. Common signs and symptoms of gliomas include: Headache. Nausea or vomiting.

What age can you get glioblastoma?

Age: Glioblastomas can occur at any age. The risk of brain tumors increases with age. Adults between ages 45 and 65 years are at a higher risk. Radiation exposure: Exposure to a type of radiation called ionizing radiation increases the risk.

How to treat brain tumors?

Magnetic resonance imaging or MRI might be used during the surgery to help guide the surgeon. Alternating electrical field therapy (the use of low-energy electrical fields to treat cancer ).

Is glioblastoma a fast growing cancer?

Glioblastoma is an aggressive, fast growing type of cancer. Glioblastoma rarely spreads from the brain to other parts of the body but aggressively invades and spreads within the brain. Glioblastoma can be difficult to treat and has a high recurrence rate. Treatments may slow down the progression of cancer and reduce signs and symptoms.

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Diagnosis

Treatment

Medically reviewed by
Dr. Rakshith Bharadwaj
Symptoms
If you or someone you know is exhibiting symptoms of Glioma, seek medical attention immediately.

Common symptoms include:

  • Headache
  • Memory loss
  • Urinary incontinence
  • Seizures
  • Speech difficulties
  • Confusion
  • Balance difficulties

Causes

  • The exact cause is not known.
  • The risk factors include:
  • Age - it is most common for people between 60 and 80 years old.
  • Radiation exposure - people who have been exposed to Radiation have an increased risk.
  • Family history - although rare, a Family history of glioma increases the risk.

Complications

If untreated for a prolonged period it may lead to

  • Speech problems
  • Memory loss
  • Double vision
  • Muscle weakness

Clinical Trials

Alternative Medicine

Coping and Support

Preparing For Your Appointment

  • Treatment for glioma depends on the type, size, grade and location of the tumor, as well as your age, overall health and preferences. In addition to actions to remove the tumor itself, treatment for glioma may also require using drugs to reduce the signs and symptoms of your tumor. Your doctor may prescribe steroids to reduce swelling and relieve p...
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