user: What are the treatments for Childhood Central Nervous System Embryonal Tumors ?

assistant: Key Points
                    - There are different types of treatment for children who have central nervous system (CNS) embryonal tumors.    - Children who have CNS embryonal tumors should have their treatment planned by a team of health care providers who are experts in treating brain tumors in children.     - Childhood brain tumors may cause signs or symptoms that begin before the cancer is diagnosed and continue for months or years.    - Some cancer treatments cause side effects months or years after treatment has ended.     - Five types of treatment are used:         - Surgery     - Radiation therapy     - Chemotherapy     - High-dose chemotherapy with stem cell rescue     - Targeted therapy        - New types of treatment are being tested in clinical trials.    - Patients may want to think about taking part in a clinical trial.    - Patients can enter clinical trials before, during, or after starting their cancer treatment.    - Follow-up tests may be needed.
                
                
                    There are different types of treatment for children who have central nervous system (CNS) embryonal tumors.
                    Different types of treatment are available for children with central nervous system (CNS) embryonal tumors. 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 who have CNS embryonal tumors should have their treatment planned by a team of health care providers who are experts in treating brain tumors in children.
                    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:          -  Pediatrician.    -  Neurosurgeon.    -  Neurologist.    -  Neuropathologist.    -  Neuroradiologist.    -  Rehabilitation specialist.    -  Radiation oncologist.    -  Psychologist.
                
                
                    Childhood brain tumors may cause signs or symptoms that begin before the cancer is diagnosed and continue for months or years.
                    Signs or symptoms caused by the tumor may begin before the cancer is diagnosed and continue for months or years. It is important to talk with your child's doctors about signs or symptoms caused by the tumor that may continue after treatment.
                
                
                    Some cancer treatments cause side effects months or years after treatment has ended.
                    Side effects from cancer treatment that begin during or after treatment and continue for months or years are called late effects. Late effects of cancer treatment may include the following:         - Physical problems.    - Changes in mood, feelings, thinking, learning, or memory.    -  Second cancers (new types of cancer).        Children diagnosed with medulloblastoma may have certain problems after surgery or radiation therapy such as changes in the ability to think, learn, and pay attention. Also, cerebellar mutism syndrome may occur after surgery. Signs of this syndrome include the following:         - Delayed ability to speak.    - Trouble swallowing and eating.    - Loss of balance, trouble walking, and worsening handwriting.    - Loss of muscle tone.    - Mood swings and changes in personality.        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).
                
                
                    Five types of treatment are used:
                    Surgery    Surgery is used to diagnose and treat a childhood CNS embryonal tumor as described in the General Information section of this summary.     Even if the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy and/or radiation therapy after surgery to kill any cancer cells that are left. Treatment given after the surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.       Radiation therapy     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. Certain ways of giving radiation therapy can help keep radiation from damaging nearby healthy tissue. These types of radiation therapy include the following:                  -  Conformal radiation therapy: Conformal radiation therapy is a type of external 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 nearby healthy tissue.       -  Stereotactic radiation therapy: Stereotactic radiation therapy is a type of external radiation therapy. A rigid head frame is attached to the skull to keep the head still during the radiation treatment. A machine aims radiation directly at the tumor, causing less damage to nearby healthy tissue. The total dose of radiation is divided into several smaller doses given over several days. This procedure is also called stereotactic external-beam radiation therapy and stereotaxic radiation therapy.                -  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. For this reason, clinical trials are studying new ways of giving radiation that may have fewer side effects than standard methods.    The way the radiation therapy is given depends on the type of cancer being treated. External radiation therapy is used to treat childhood CNS embryonal tumors.    Because radiation therapy can affect growth and brain development in young children, especially children who are three years old or younger, chemotherapy may be given to delay or reduce the need for radiation therapy.        Chemotherapy     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 into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). Combination chemotherapy is treatment using more than one anticancer drug. The way the chemotherapy is given depends on the type of cancer being treated.     Regular dose anticancer drugs given by mouth or vein to treat central nervous system tumors cannot cross the blood-brain barrier and enter the fluid that surrounds the brain and spinal cord. Instead, an anticancer drug is injected into the fluid-filled space to kill cancer cells that may have spread there. This is called intrathecal or intraventricular chemotherapy.          High-dose chemotherapy with stem cell rescue     High-dose chemotherapy with stem cell rescue is a way of giving high doses of chemotherapy and replacing blood -forming cells destroyed by the cancer treatment. Stem cells (immature blood cells) are removed from the blood or bone marrow of the patient or a donor and are frozen and stored. After the chemotherapy is completed, the stored stem cells are thawed and given back to the patient through an infusion. These reinfused stem cells grow into (and restore) the bodys blood cells.       Targeted therapy     Targeted therapy is a type of treatment that uses drugs or other substances to attack cancer cells. Targeted therapies usually cause less harm to normal cells than chemotherapy or radiation therapy do.     Signal transduction inhibitors are a type of targeted therapy used to treat recurrent medulloblastoma. Signal transduction inhibitors block signals that are passed from one molecule to another inside a cell. Blocking these signals may kill cancer cells. Vismodegib is a type of signal transduction inhibitor.
                
                
                    New types of treatment are being tested in clinical trials.
                    Information about clinical trials is available from the NCI website.
                
                
                    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. (See the General Information section for a list of tests.) 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. This is sometimes called re-staging.   Some of the imaging 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 brain tumor has recurred (come back). If the imaging tests show abnormal tissue in the brain, a biopsy may also be done to find out if the tissue is made up of dead tumor cells or if new cancer cells are growing. These tests are sometimes called follow-up tests or check-ups.
                
                
							            Treatment Options for Childhood Central Nervous System Embryonal Tumors and Childhood Pineoblastoma
							            
							                
							                    Newly Diagnosed Childhood Medulloblastoma
							                    In newly diagnosed childhood medulloblastoma, the tumor itself has not been treated. The child may have received drugs or treatment to relieve signs or symptoms caused by the tumor.    Children older than 3 years with average-risk medulloblastoma     Standard treatment of average-risk medulloblastoma in children older than 3 years includes the following:         -  Surgery to remove as much of the tumor as possible. This is followed by radiation therapy to the brain and spinal cord. Chemotherapy is also given during and after radiation therapy.    - Surgery to remove the tumor, radiation therapy, and high-dose chemotherapy with stem cell rescue.         Children older than 3 years with high-risk medulloblastoma    Standard treatment of high-risk medulloblastoma in children older than 3 years includes the following:         - Surgery to remove as much of the tumor as possible. This is followed by a larger dose of radiation therapy to the brain and spinal cord than the dose given for average-risk medulloblastoma. Chemotherapy is also given during and after radiation therapy.    - Surgery to remove the tumor, radiation therapy, and high-dose chemotherapy with stem cell rescue.    - A clinical trial of new combinations of radiation therapy and chemotherapy.         Children aged 3 years and younger    Standard treatment of medulloblastoma in children aged 3 years and younger is:         - Surgery to remove as much of the tumor as possible, followed by chemotherapy.        Other treatments that may be given after surgery include the following:         - Chemotherapy with or without radiation therapy to the area where the tumor was removed.    - High-dose chemotherapy with stem cell rescue.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with untreated childhood medulloblastoma. 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 website.
							                
							                
							                    Newly Diagnosed Childhood Nonmedulloblastoma Embryonal Tumors
							                    In newly diagnosed childhood nonmedulloblastoma embryonal tumors, the tumor itself has not been treated. The child may have received drugs or treatment to relieve symptoms caused by the tumor.    Children older than 3 years     Standard treatment of nonmedulloblastoma embryonal tumors in children older than 3 years is:         -  Surgery to remove as much of the tumor as possible. This is followed by radiation therapy to the brain and spinal cord. Chemotherapy is also given during and after radiation therapy.         Children aged 3 years and younger    Standard treatment of nonmedulloblastoma embryonal tumors in children aged 3 years and younger is:         - Surgery to remove as much of the tumor as possible, followed by chemotherapy.        Other treatments that may be given after surgery include the following:         - Chemotherapy and radiation therapy to the area where the tumor was removed.    -  High-dose chemotherapy with stem cell rescue.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with untreated childhood nonmedulloblastoma. 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 website.
							                
							                
							                    Newly Diagnosed Childhood Medulloepithelioma
							                    In newly diagnosed childhood medulloepithelioma, the tumor itself has not been treated. The child may have received drugs or treatment to relieve symptoms caused by the tumor.     Children older than 3 years     Standard treatment of medulloepithelioma in children older than 3 years includes the following:         -  Surgery to remove as much of the tumor as possible. This is followed by radiation therapy to the brain and spinal cord. Chemotherapy is also given during and after radiation therapy.    - Surgery to remove the tumor, radiation therapy, and high-dose chemotherapy with stem cell rescue.    - A clinical trial of new combinations of radiation therapy and chemotherapy.         Children aged 3 years and younger    Standard treatment of medulloepithelioma in children aged 3 years and younger includes the following:         - Surgery to remove as much of the tumor as possible, followed by chemotherapy.    - High-dose chemotherapy with stem cell rescue.    - Radiation therapy, when the child is older.     - A clinical trial of new combinations and schedules of chemotherapy or new combinations of chemotherapy with stem cell rescue.        Treatment of medulloepithelioma in children aged 3 years and younger is often within a clinical trial.    Check the list of NCI-supported cancer clinical trials that are now accepting patients with childhood medulloepithelioma. 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 website.
							                
							                
							                    Newly Diagnosed Childhood Pineoblastoma
							                    In newly diagnosed childhood pineoblastoma, the tumor itself has not been treated. The child may have received drugs or treatment to relieve symptoms caused by the tumor.    Children older than 3 years     Standard treatment of pineoblastoma in children older than 3 years includes the following:         -  Surgery to remove the tumor. The tumor usually cannot be completely removed because of where it is in the brain. Surgery is often followed by radiation therapy to the brain and spinal cord and chemotherapy.     - A clinical trial of high-dose chemotherapy after radiation therapy and stem cell rescue.    - A clinical trial of chemotherapy during radiation therapy.         Children aged 3 years and younger    Standard treatment of pineoblastoma in children aged 3 years and younger includes the following:         -  Biopsy to diagnose pineoblastoma followed by chemotherapy.    - If the tumor responds to chemotherapy, radiation therapy is given when the child is older.    -  High-dose chemotherapy with stem cell rescue.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with untreated childhood pineoblastoma. 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 website.
							                
							                
							                    Recurrent Childhood Central Nervous System Embryonal Tumors and Pineoblastomas
							                    The treatment of central nervous system (CNS) embryonal tumors and pineoblastoma that recur (come back) depends on:         - The type of tumor.    - Whether the tumor recurred where it first formed or has spread to other parts of the brain, spinal cord, or body.    - The type of treatment given in the past.    - How much time has passed since the initial treatment ended.    - Whether the patient has signs or symptoms.        Treatment for recurrent childhood CNS embryonal tumors and pineoblastomas may include the following:         - For children who previously received radiation therapy and chemotherapy, treatment may include repeat radiation at the site where the cancer started and where the tumor has spread. Stereotactic radiation therapy and/or chemotherapy may also be used.    - For infants and young children who previously received chemotherapy only and have a local recurrence, treatment may be chemotherapy with radiation therapy to the tumor and the area close to it. Surgery to remove the tumor may also be done.    - For patients who previously received radiation therapy, high-dose chemotherapy and stem cell rescue may be used. It is not known whether this treatment improves survival.    -  Targeted therapy with a signal transduction inhibitor for patients whose cancer has certain changes in the genes.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with recurrent childhood central nervous system embryonal tumor. 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 website.