Home > Health & Wellness > Health Library > Childhood Brain Stem Glioma Treatment (PDQ®): Treatment - Patient Information [NCI]
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Childhood brain stem glioma is a disease in which benign (noncancer) or malignant (cancer) cells form in the tissues of the brain stem.
Gliomas are tumors formed from glial cells. Glial cells in the brain hold nerve cells in place, bring food and oxygen to them, and help protect them from disease, such as infection.
The brain stem is the part of the brain connected to the spinal cord. It is in the lowest part of the brain, just above the back of the neck. The brain stem is the part of the brain that controls breathing, heart rate, and the nerves and muscles used in seeing, hearing, walking, talking, and eating. Most childhood brain stem gliomas are pontine gliomas, which form in a part of the brain stem called the pons.
Anatomy of the brain showing the cerebrum, ventricles (with cerebrospinal fluid shown in blue), cerebellum, brain stem (pons and medulla), and other parts of the brain.
Brain tumors are the third most common type of cancer in children.
This summary refers to the treatment of primary brain tumors (tumors that begin in the brain). Treatment for metastatic brain tumors, which are tumors formed by cancer cells that begin in other parts of the body and spread to the brain, is not discussed in this summary.
Brain tumors can occur in both children and adults; however, treatment for children may be different than treatment for adults. See the following PDQ treatment summaries for more information:
Brain tumors may be benign (not cancer) or malignant (cancer).
Benign brain tumors grow and press on nearby areas of the brain. They rarely spread into other tissues. Malignant brain tumors are likely to grow quickly and spread into other brain tissue. When a tumor grows into or presses on an area of the brain, it may stop that part of the brain from working the way it should. Both benign and malignant brain tumors can cause signs and symptoms and need treatment.
There are two types of brain stem gliomas in children.
Childhood brain stem glioma is either a diffuse intrinsic pontine glioma (DIPG) or a focal or low-grade glioma.
The cause of most childhood brain tumors is unknown.
Anything that increases your risk of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn't mean that you will not get cancer. Talk with your child's doctor if you think your child may be at risk. Possible risk factors for brain stem glioma include:
The signs and symptoms of brain stem glioma are not the same in every child.
Signs and symptoms depend on the following:
Some tumors do not cause signs or symptoms. Signs and symptoms may be caused by childhood brain stem gliomas or by other conditions. Check with your child's doctor if your child has any of the following:
Tests that examine the brain are used to detect (find) childhood brain stem glioma.
The following tests and procedures may be used:
A biopsy may be done to diagnose certain types of brain stem glioma.
If the MRI scan looks like the tumor is a DIPG, a biopsy is usually not done and the tumor is not removed.
If the MRI scan looks like a focal or low-grade brain stem glioma, a biopsy may be done. A part of the skull is removed and a needle is used to remove a sample of the brain tissue. Sometimes, the needle is guided by a computer. A pathologist views the tissue under a microscope to look for cancer cells. If cancer cells are found, the doctor will remove as much tumor as safely possible during the same surgery.
Craniotomy: An opening is made in the skull and a piece of the skull is removed to show part of the brain.
The following test may be done on the tissue that was removed:
Certain factors affect prognosis (chance of recovery) and treatment options.
The prognosis and treatment options depend on:
The plan for cancer treatment depends on whether the tumor is in one area of the brain or has spread all through the brain.
Staging is the process used to find out how much cancer there is and if cancer has spread. It is important to know the stage in order to plan treatment.
There is no standard staging system for childhood brain stem glioma. Treatment is based on the following:
These brain stem gliomas usually do not spread outside the brain stem.
A focal or low-grade brain stem glioma may recur many years after first being treated. The tumor may come back in the brain or in other parts of the central nervous system. Before cancer treatment is given, imaging tests, a biopsy, or surgery may be done to make sure there is cancer and find out how much cancer there is.
There are different types of treatment for children with brain stem glioma.
Different types of treatment are available for children with brain stem glioma. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment.
Because cancer in children is rare, taking part in a clinical trial should be considered. Some clinical trials are open only to patients who have not started treatment.
Children with brain stem glioma should have their treatment planned by a team of health care providers who are experts in treating childhood brain tumors.
Treatment will be overseen by a pediatric oncologist, a doctor who specializes in treating children with cancer. The pediatric oncologist works with other pediatric health care providers who are experts in treating children with brain tumors and who specialize in certain areas of medicine. These may include the following specialists:
Childhood brain stem gliomas may cause signs or symptoms that begin before the cancer is diagnosed and continue for months or years.
Childhood brain stem gliomas may cause signs or symptoms that continue for months or years. Signs or symptoms caused by the tumor may begin before diagnosis. Signs or symptoms caused by treatment may begin during or right after treatment.
Some cancer treatments cause side effects months or years after treatment has ended.
These are called late effects. Late effects may include the following:
Some late effects may be treated or controlled. It is important to talk with your child's doctors about the effects cancer treatment can have on your child. (See the PDQ summary on Late Effects of Treatment for Childhood Cancer for more information).
Six types of standard treatment are used:
Surgery may be used to diagnose and treat childhood brain stem glioma as discussed in the General Information section of this summary.
Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. There are two types of radiation therapy. External radiation therapy uses a machine outside the body to send radiation toward the cancer. Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer.
Radiation therapy to the brain can affect growth and development in young children. Conformal radiation therapy is a type of radiation therapy that uses a computer to make a 3-dimensional (3-D) picture of the tumor and shapes the radiation beams to fit the tumor. This allows a high dose of radiation to reach the tumor and causes less damage to normal tissue around the tumor.
The way the radiation therapy is given depends on the type of the cancer being treated. External radiation therapy is used to treat DIPG. External and/or internal radiation therapy may be used to treat focal or low-grade brain stem gliomas.
Several months after radiation therapy to the brain, imaging tests may show changes to the brain tissue. These changes may be caused by the radiation therapy or may mean the tumor is growing. It is important to be sure the tumor is growing before any more treatment is given.
Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly in the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). The way the chemotherapy is given depends on the type of the cancer being treated.
Because radiation therapy to the brain can affect growth and brain development in young children, clinical trials are studying ways of using chemotherapy to delay or reduce the need for radiation therapy.
Cerebrospinal fluid diversion
Cerebrospinal fluid diversion is a method used to drain fluid that has built up in the brain. A shunt (long, thin tube) is placed in a ventricle (fluid-filled space) of the brain and threaded under the skin to another part of the body, usually the abdomen. The shunt carries extra fluid away from the brain so it may be absorbed elsewhere in the body.Cerebrospinal fluid (CSF) diversion. Extra CSF is removed from a ventricle in the brain through a shunt (tube) and is emptied into the abdomen. A valve controls the flow of CSF.
Observation is closely monitoring a patient's condition without giving any treatment until signs or symptoms appear or change.
Targeted therapy is a type of treatment that uses drugs or other substances to identify and attack specific cancer cells without harming normal cells.
Some focal or low-grade brain stem gliomas that cannot be removed by surgery may be treated with BRAF kinase inhibitor therapy. BRAF kinase inhibitors block the BRAF protein. BRAF proteins help control cell growth and may be mutated (changed) in some types of brain stem glioma. Blocking mutated BRAF kinase proteins may help keep cancer cells from growing.
New types of treatment are being tested in clinical trials.
Information about clinical trials is available from the NCI Web site.
Patients may want to think about taking part in a clinical trial.
For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.
Many of today's standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.
Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.
Patients can enter clinical trials before, during, or after starting their cancer treatment.
Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.
Clinical trials are taking place in many parts of the country. See the Treatment Options section that follows for links to current treatment clinical trials. These have been retrieved from NCI's listing of clinical trials.
Follow-up tests may be needed.
Some of the tests that were done to diagnose the cancer or to find out the stage of the cancer may be repeated. Some tests will be repeated in order to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.
Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your child's condition has changed or if the cancer has recurred (come back). These tests are sometimes called follow-up tests or check-ups.
If the results of imaging tests done after treatment show a mass in the brain, a biopsy may be done to find out if it is made up of dead tumor cells or if new cancer cells are growing. In children who are expected to live a long time, regular MRIs may be done to see if the cancer has come back.
Newly Diagnosed Childhood Brain Stem Glioma
Newly diagnosed childhood brain stem glioma is a tumor for which no treatment has been given. The child may have received drugs or treatment to relieve signs or symptoms caused by the tumor.
Standard treatment of diffuse intrinsic pontine glioma (DIPG) may include the following:
Standard treatment of focal or low-grade glioma may include the following:
Treatment of brain stem glioma in children with neurofibromatosis type 1 may be observation. The tumors are slow-growing in these children and may not need specific treatment for years.
Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with untreated childhood brain stem glioma. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your child's doctor about clinical trials that may be right for your child. General information about clinical trials is available from the NCI Web site.
Recurrent Childhood Brain Stem Glioma
Treatment of recurrent diffuse intrinsic pontine glioma is usually palliative therapy, to relieve symptoms and improve the child's quality of life. The child may also be treated in a clinical trial of a new treatment.
Treatment of recurrent focal or low-grade childhood brain stem glioma may include the following:
Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with recurrent childhood brain stem glioma. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your child's doctor about clinical trials that may be right for your child. General information about clinical trials is available from the NCI Web site.
For more information about childhood brain tumors, see the following:
For more childhood cancer information and other general cancer resources, see the following:
The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.
Editorial changes were made to this summary.
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National Cancer Institute: PDQ® Childhood Brain Stem Glioma Treatment. Bethesda, MD: National Cancer Institute. Date last modified <MM/DD/YYYY>. Available at: http://www.cancer.gov/types/brain/patient/child-glioma-treatment-pdq. Accessed <MM/DD/YYYY>.
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