Los avances de la medicina en el campo de la genética, por ende de la herencia, están modificando el paisaje del conocimiento médico de las enfermedades. Este BLOG intenta informar acerca de los avances proveyendo orientación al enfermo y su familia así como información científica al profesional del equipo de salud de habla hispana.
jueves, 7 de marzo de 2019
Neuroblastoma Treatment (PDQ®)—Patient Version - National Cancer Institute
Neuroblastoma is a disease in which malignant (cancer) cells form in neuroblasts (immature nerve tissue) in the adrenal gland, neck, chest, or spinal cord.
Neuroblastoma is sometimes caused by a gene mutation (change) passed from the parent to the child.
Signs and symptoms of neuroblastoma include bone pain and a lump in the abdomen, neck, or chest.
Tests that examine many different body tissues and fluids are used to detect (find) and diagnose neuroblastoma.
A biopsy is done to diagnose neuroblastoma.
Certain factors affect prognosis (chance of recovery) and treatment options.
Neuroblastoma is a disease in which malignant (cancer) cells form in neuroblasts (immature nerve tissue) in the adrenal gland, neck, chest, or spinal cord.
ENLARGENeuroblastoma may be found in the adrenal glands and paraspinal nerve tissue from the neck to the pelvis.
Neuroblastoma most often begins in infancy and may be diagnosed in the first month of life. It is found when the tumor begins to grow and cause signs or symptoms. Sometimes it forms before birth and is found during a fetalultrasound.
Neuroblastoma is sometimes caused by a gene mutation (change) passed from the parent to the child.
Genemutations that increase the risk of neuroblastoma are sometimes inherited (passed from the parent to the child). In children with a gene mutation, neuroblastoma usually occurs at a younger age and more than one tumor may form in the adrenal glands.
Children with certain gene mutations and/or hereditary (inherited) syndromes should be checked for signs of neuroblastoma until they are aged 10 years. The following tests and procedures may be used:
Abdominal ultrasound: A procedure in which high-energy sound waves (ultrasound) are bounced off the abdomen and make echoes. The echoes form a picture of the abdomen called a sonogram. The picture can be printed to be looked at later.
Urinecatecholamine studies: A procedure in which a urine sample is checked to measure the amount of certain substances, vanillylmandelic acid (VMA) and homovanillic acid (HVA), that are made when catecholamines break down and are released into the urine. A higher than normal amount of VMA or HVA can be a sign of neuroblastoma.
Chest x-ray: An x-ray of the organs and bones inside the chest. An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.
Signs and symptoms of neuroblastoma include bone pain and a lump in the abdomen, neck, or chest.
The most common signs and symptoms of neuroblastoma are caused by the tumor pressing on nearby tissues as it grows or by cancer spreading to the bone. These and other signs and symptoms may be caused by neuroblastoma or by other conditions.
Check with your child’s doctor if your child has any of the following:
Lump in the abdomen, neck, or chest.
Bulging eyes.
Dark circles around the eyes ("black eyes").
Bone pain.
Swollen stomach and trouble breathing (in infants).
Painless, bluish lumps under the skin (in infants).
Weakness or paralysis (loss of ability to move a body part).
Less common signs and symptoms of neuroblastoma include the following:
Horner syndrome (droopy eyelid, smaller pupil, and less sweating on one side of the face).
Jerky muscle movements.
Uncontrolled eye movements.
Tests that examine many different body tissues and fluids are used to detect (find) and diagnose neuroblastoma.
The following tests and procedures may be used:
Physical exam and history: An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual. A history of the patient’s health habits and past illnesses and treatments will also be taken.
Neurological exam: A series of questions and tests to check the brain, spinal cord, and nerve function. The exam checks a person’s mental status, coordination, and ability to walk normally, and how well the muscles, senses, and reflexes work. This may also be called a neuro exam or a neurologic exam.
Urine catecholamine studies: A procedure in which a urine sample is checked to measure the amount of certain substances, vanillylmandelic acid (VMA) and homovanillic acid (HVA), that are made when catecholamines break down and are released into the urine. A higher than normal amount of VMA or HVA can be a sign of neuroblastoma.
Blood chemistry studies: A procedure in which a blood sample is checked to measure the amounts of certain substances released into the blood by organs and tissues in the body. An unusual (higher or lower than normal) amount of a substance can be a sign of disease.
X-ray: An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.
CT scan (CAT scan): A procedure that makes a series of detailed pictures of areas inside the body, taken from different angles. The pictures are made by a computer linked to an x-ray machine. A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography.ENLARGEComputed tomography (CT) scan of the abdomen. The child lies on a table that slides through the CT scanner, which takes x-ray pictures of the inside of the abdomen.
MRI (magnetic resonance imaging) with gadolinium: A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of areas inside the body. A substance called gadolinium is injected into a vein. The gadolinium collects around the cancer cells so they show up brighter in the picture. This procedure is also called nuclear magnetic resonance imaging (NMRI).ENLARGEMagnetic resonance imaging (MRI) of the abdomen. The child lies on a table that slides into the MRI scanner, which takes pictures of the inside of the body. The pad on the child’s abdomen helps make the pictures clearer.
MIBG (metaiodobenzylguanidine) scan: A procedure used to find neuroendocrine tumors, such as neuroblastoma. A very small amount of a substance called radioactiveMIBG is injected into a vein and travels through the bloodstream. Neuroendocrine tumor cells take up the radioactive MIBG and are detected by a scanner. Scans may be taken over 1-3 days. An iodine solution may be given before or during the test to keep the thyroid gland from absorbing too much of the MIBG. This test is also used to find out how well the tumor is responding to treatment. MIBG is used in high doses to treat neuroblastoma.
Bone marrow aspiration and biopsy: The removal of bone marrow, blood, and a small piece of bone by inserting a hollow needle into the hipbone or breastbone. A pathologist views the bone marrow, blood, and bone under a microscope to look for signs of cancer.ENLARGEBone marrow aspiration and biopsy. After a small area of skin is numbed, a bone marrow needle is inserted into the child’s hip bone. Samples of blood, bone, and bone marrow are removed for examination under a microscope.
Ultrasound exam: A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The echoes form a picture of body tissues called a sonogram. The picture can be printed to be looked at later. An ultrasound exam is not done if a CT/MRI has been done.ENLARGEAbdominal ultrasound. An ultrasound transducer connected to a computer is pressed against the skin of the abdomen. The transducer bounces sound waves off internal organs and tissues to make echoes that form a sonogram (computer picture).
A biopsy is done to diagnose neuroblastoma.
Cells and tissues are removed during a biopsy so they can be viewed under a microscope by a pathologist to check for signs of cancer. The way the biopsy is done depends on where the tumor is in the body. Sometimes the whole tumor is removed at the same time the biopsy is done.
The following tests may be done on the tissue that is removed:
Light microscopy: A laboratory test in which cells in a sample of tissue are viewed under regular and high-powered microscopes to look for certain changes in the cells.
Immunohistochemistry: A test that uses antibodies to check for certain antigens in a sample of tissue. The antibody is usually linked to a radioactive substance or a dye that causes the tissue to light up under a microscope. This type of test may be used to tell the difference between different types of cancer.
MYCN amplification study: A laboratory study in which tumor or bone marrow cells are checked for the level of MYCN. MYCN is important for cell growth. A higher level of MYCN (more than 10 copies of the gene) is called MYCN amplification. Neuroblastoma with MYCN amplification is more likely to spread in the body and less likely to respond to treatment.
Children up to 6 months old may not need a biopsy or surgery to remove the tumor because the tumor may disappear without treatment.
Certain factors affect prognosis (chance of recovery) and treatment options.
The prognosis (chance of recovery) and treatment options depend on the following:
Tumor histology (the shape, function, and structure of the tumor cells).
Whether there is cancer in the lymph nodes on the same side of the body as the primary cancer or whether there is cancer in the lymph nodes on the opposite side of the body.
The tumor biology is said to be favorable or unfavorable, depending on these factors. A favorable tumor biology means there is a better chance of recovery.
In some children up to 6 months old, neuroblastoma may disappear without treatment. This is called spontaneous regression. The child is closely watched for signs or symptoms of neuroblastoma. If signs or symptoms occur, treatment may be needed.
Stages of Neuroblastoma
KEY POINTS
After neuroblastoma has been diagnosed, tests are done to find out if cancer has spread from where it started to other parts of the body.
There are three ways that cancer spreads in the body.
Cancer may spread from where it began to other parts of the body.
The following stages are used for neuroblastoma:
Stage 1
Stage 2
Stage 3
Stage 4
Treatment of neuroblastoma is based on risk groups.
After neuroblastoma has been diagnosed, tests are done to find out if cancer has spread from where it started to other parts of the body.
The process used to find out the extent or spread of cancer is called staging. The information gathered from the staging process helps determine the stage of the disease. For neuroblastoma, the stage of disease affects whether the cancer is low risk, intermediate risk, or high risk. It also affects the treatment plan. The results of some tests and procedures used to diagnose neuroblastoma may be used for staging. See the General Information section for a description of these tests and procedures.
The following tests and procedures also may be used to determine the stage:
Lymph nodebiopsy: The removal of all or part of a lymph node. A pathologist views the tissue under a microscope to look for cancer cells. One of the following types of biopsies may be done:
X-ray of the bone: An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.
PET scan (positron emission tomography scan): A procedure to find malignanttumor cells in the body. A small amount of radioactive glucose (sugar) is injected into a vein. The PET scanner rotates around the body and makes a picture of where glucose is being used in the body. Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do.
There are three ways that cancer spreads in the body.
Tissue. The cancer spreads from where it began by growing into nearby areas.
Lymph system. The cancer spreads from where it began by getting into the lymph system. The cancer travels through the lymph vessels to other parts of the body.
Blood. The cancer spreads from where it began by getting into the blood. The cancer travels through the blood vessels to other parts of the body.
Cancer may spread from where it began to other parts of the body.
When cancer spreads to another part of the body, it is called metastasis. Cancer cells break away from where they began (the primary tumor) and travel through the lymph system or blood.
Lymph system. The cancer gets into the lymph system, travels through the lymph vessels, and forms a tumor (metastatic tumor) in another part of the body.
Blood. The cancer gets into the blood, travels through the blood vessels, and forms a tumor (metastatic tumor) in another part of the body.
The metastatic tumor is the same type of cancer as the primary tumor. For example, if neuroblastoma spreads to the liver, the cancer cells in the liver are actually neuroblastoma cells. The disease is metastatic neuroblastoma, not liver cancer.
metastasis: how cancer spreads
Many cancer deaths are caused when cancer moves from the original tumor and spreads to other tissues and organs. This is called metastatic cancer. This animation shows how cancer cells travel from the place in the body where they first formed to other parts of the body.
The following stages are used for neuroblastoma:
Stage 1
In stage 1, the tumor is in only one area and all of the tumor that can be seen is completely removed during surgery.
Stage 2A: The tumor is in only one area and all of the tumor that can be seen cannot be completely removed during surgery.
Stage 2B: The tumor is in only one area and all of the tumor that can be seen may be completely removed during surgery. Cancercells are found in the lymph nodes near the tumor.
the tumor cannot be completely removed during surgery and has spread from one side of the body to the other side and may also have spread to nearby lymph nodes; or
the tumor is in only one area, on one side of the body, but has spread to lymph nodes on the other side of the body; or
the tumor is in the middle of the body and has spread to tissues or lymph nodes on both sides of the body, and the tumor cannot be removed by surgery.
Treatment of neuroblastoma is based on risk groups.
For many types of cancer, stages are used to plan treatment. For neuroblastoma, treatment depends on risk groups. The stage of neuroblastoma is one factor used to determine risk group. Other factors are the age of the child, tumor histology, and tumor biology.
There are three risk groups: low risk, intermediate risk, and high risk.
Low-risk and intermediate-risk neuroblastoma have a good chance of being cured.
High-risk neuroblastoma may be hard to cure.
Recurrent Neuroblastoma
Recurrentneuroblastoma is cancer that has recurred (come back) after it has been treated. The cancer may come back in the same place or in other parts of the body.
Treatment Option Overview
KEY POINTS
There are different types of treatment for patients with neuroblastoma.
Children with neuroblastoma should have their treatment planned by a team of doctors who are experts in treating childhood cancer, especially neuroblastoma.
Treatment for neuroblastoma may cause side effects.
Seven types of standard treatment are used:
Observation
Surgery
Radiation therapy
Iodine 131-MIBG therapy
Chemotherapy
High-dose chemotherapy and radiation therapy with stem cell rescue
Targeted therapy
New types of treatment are being tested in clinical trials.
Immunotherapy
Other drug therapy
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 patients with neuroblastoma.
Different types of treatment are available for patients with neuroblastoma. 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 neuroblastoma should have their treatment planned by a team of doctors who are experts in treating childhood cancer, especially neuroblastoma.
Treatment will be overseen by a pediatric oncologist, a doctor who specializes in treating children with cancer. The pediatric oncologist works with other pediatrichealth care providers who are experts in treating children with neuroblastoma and who specialize in certain areas of medicine. These may include the following specialists:
Treatment for neuroblastoma may cause side effects.
For information about side effects that begin during treatment for cancer, see our Side Effects page.
Side effects from cancer treatment that begin after treatment and continue for months or years are called late effects. Late effects of cancer treatment may include:
Physical problems.
Changes in mood, feelings, thinking, learning, or memory.
Some late effects may be treated or controlled. It is important that parents of children who are treated for neuroblastoma talk with their doctors about the possible late effects caused by some treatments. See the PDQ summary on Late Effects of Treatment for Childhood Cancer for more information.
Surgery is used to treat neuroblastoma unless it has spread to other parts of the body. Depending on where the tumor is, as much of the tumor as is safely possible will be removed. If the tumor cannot be removed, a biopsy may be done instead.
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:
The way the radiation therapy is given depends on the type of cancer being treated and the child's risk group. External radiation therapy is used to treat neuroblastoma.
Iodine 131-MIBG therapy
Iodine 131-MIBGtherapy is a treatment with radioactive iodine. The radioactive iodine is given through an intravenous (IV) line and enters the bloodstream which carries radiation directly to tumor cells. Radioactive iodine collects in neuroblastoma cells and kills them with the radiation that is given off. Iodine 131-MIBG therapy is sometimes used to treat high-risk neuroblastoma that comes back after initial treatment.
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). The way the chemotherapy is given depends on the type of cancer being treated and the child's risk group.
High-dose chemotherapy and radiation therapy with stem cell rescue
High-dose chemotherapy and radiation therapy with stem cell rescue is a way of giving high doses of chemotherapy and radiation therapy and replacing blood -forming cells destroyed by cancer treatment for high-risk neuroblastoma. Stem cells (immature blood cells) are removed from the blood or bone marrow of the patient and are frozen and stored. After chemotherapy and radiation therapy are 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 body's blood cells.
Maintenance therapy is given after high-dose chemotherapy and radiation therapy with stem cell rescue to kill any cancer cells that may regrow and cause the disease to come back. Maintenance therapy is given for 6 months and includes the following treatments:
Isotretinoin: A vitamin -like drug that slows the cancer's ability to make more cancer cells and changes how these cells look and act. This drug is taken by mouth.
Dinutuximab: A type of monoclonal antibody therapy that uses an antibody made in the laboratory from a single type of immune system cell. Dinutuximab identifies and attaches to a substance, called GD2, on the surface of neuroblastoma cells. Once dinutuximab attaches to the GD2, a signal is sent to the immune system that a foreignsubstance has been found and needs to be killed. Then the body's immune system kills the neuroblastoma cell. Dinutuximab is given by infusion. It is a type of targeted therapy.
Interleukin-2 (IL-2): A type of immunotherapy that boosts the growth and activity of many immune cells, especially lymphocytes (a type of white blood cell). Lymphocytes can attack and kill cancer cells.
New types of treatment are being tested in clinical trials.
This summary section describes treatments that are being studied in clinical trials. It may not mention every new treatment being studied. Information about clinical trials is available from the NCI website.
Immunotherapy
Immunotherapy is a treatment that uses the patient’s immune system to fight cancer. Substances made by the body or made in a laboratory are used to boost, direct, or restore the body’s natural defenses against cancer. This type of cancer treatment is also called biotherapy or biological therapy.
Vaccine therapy uses a substance to stimulate the immune system to destroy a tumor. Vaccine therapy is being studied to treat neuroblastoma that has come back after treatment.
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. Information about clinical trials supported by NCI can be found on NCI’s clinical trials search webpage. Clinical trials supported by other organizations can be found on the ClinicalTrials.gov website.
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.
Chemotherapy with or without surgery, for children with symptoms, children whose tumor has continued to grow and cannot be removed by surgery, or children with unfavorable tumor biology.
Observation alone for infants younger than 6 months who have small adrenal tumors.
Observation alone for infants who do not have signs or symptoms of neuroblastoma.
Radiation therapy to treat tumors that are causing serious problems and do not respond quickly to chemotherapy or surgery.
Because there is no standard treatment for recurrent neuroblastoma in patients first treated for high-risk neuroblastoma, patients may want to consider a clinical trial. For information about clinical trials, please see the NCI website.
Checking a sample of the patient's tumor for certain gene changes. The type of targeted therapy that will be given to the patient depends on the type of gene change.
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
Physician Data Query (PDQ) is the National Cancer Institute's (NCI's) comprehensive cancer information database. The PDQ database contains summaries of the latest published information on cancer prevention, detection, genetics, treatment, supportive care, and complementary and alternative medicine. Most summaries come in two versions. The health professional versions have detailed information written in technical language. The patient versions are written in easy-to-understand, nontechnical language. Both versions have cancer information that is accurate and up to date and most versions are also available in Spanish.
PDQ is a service of the NCI. The NCI is part of the National Institutes of Health (NIH). NIH is the federal government’s center of biomedical research. The PDQ summaries are based on an independent review of the medical literature. They are not policy statements of the NCI or the NIH.
Purpose of This Summary
This PDQ cancer information summary has current information about the treatment of neuroblastoma. It is meant to inform and help patients, families, and caregivers. It does not give formal guidelines or recommendations for making decisions about health care.
Reviewers and Updates
Editorial Boards write the PDQ cancer information summaries and keep them up to date. These Boards are made up of experts in cancer treatment and other specialties related to cancer. The summaries are reviewed regularly and changes are made when there is new information. The date on each summary ("Updated") is the date of the most recent change.
The information in this patient summary was taken from the health professional version, which is reviewed regularly and updated as needed, by the PDQ Pediatric Treatment Editorial Board.
Clinical Trial Information
A clinical trial is a study to answer a scientific question, such as whether one treatment is better than another. Trials are based on past studies and what has been learned in the laboratory. Each trial answers certain scientific questions in order to find new and better ways to help cancer patients. During treatment clinical trials, information is collected about the effects of a new treatment and how well it works. If a clinical trial shows that a new treatment is better than one currently being used, the new treatment may become "standard." Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.
Clinical trials can be found online at NCI's website. For more information, call the Cancer Information Service (CIS), NCI's contact center, at 1-800-4-CANCER (1-800-422-6237).
Permission to Use This Summary
PDQ is a registered trademark. The content of PDQ documents can be used freely as text. It cannot be identified as an NCI PDQ cancer information summary unless the whole summary is shown and it is updated regularly. However, a user would be allowed to write a sentence such as “NCI’s PDQ cancer information summary about breast cancer prevention states the risks in the following way: [include excerpt from the summary].”
Images in this summary are used with permission of the author(s), artist, and/or publisher for use in the PDQ summaries only. If you want to use an image from a PDQ summary and you are not using the whole summary, you must get permission from the owner. It cannot be given by the National Cancer Institute. Information about using the images in this summary, along with many other images related to cancer can be found in Visuals Online. Visuals Online is a collection of more than 3,000 scientific images.
Disclaimer
The information in these summaries should not be used to make decisions about insurance reimbursement. More information on insurance coverage is available on Cancer.gov on the Managing Cancer Care page.
Contact Us
More information about contacting us or receiving help with the Cancer.gov website can be found on our Contact Us for Help page. Questions can also be submitted to Cancer.gov through the website’s E-mail Us.
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