The tumors may be benign (not cancer) or malignant (cancer). Benign brain tumors may grow and press on nearby areas of the brain. They rarely spread into other brain tissue. Malignant brain tumors may be low grade or high grade. High-grade tumors are likely to grow quickly and spread into other brain tissue. Low-grade tumors tend to grow and spread more slowly than high-grade tumors. 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 or symptoms, need treatment, and can recur (come back).
Together, the brain and spinal cord make up the central nervous system (CNS).
This summary is about primary benign and malignant brain and spinal cord tumors.
The brain has three major parts:
The spinal cord is a column of nerve tissue that runs from the brain stem down the center of the back. It is covered by three thin layers of tissue called membranes. The spinal cord and membranes are surrounded by the vertebrae (back bones). Spinal cord nerves carry messages between the brain and the rest of the body, such as a message from the brain to cause muscles to move or a message from the skin to the brain to feel touch.
Although cancer is rare in children, brain and spinal cord tumors are the second most common type of childhood cancer, after leukemia. Brain tumors can occur in both children and adults. Treatment for children is usually different than treatment for adults. (See the PDQ summary on Adult Central Nervous System Tumors Treatment for more information about the treatment of adults.)
Metastatic tumors are formed by cancer cells that begin in other parts of the body and spread to the brain or spinal cord. Treatment of metastatic brain and spinal cord tumors is not covered in this summary.
Signs and symptoms depend on the following:
Signs and symptoms may be caused by childhood brain and spinal cord tumors or by other conditions. Check with your child's doctor if your child has any of the following:
Brain Tumor Signs and Symptoms
Spinal Cord Tumor Signs and Symptoms
In addition to these signs and symptoms of brain and spinal cord tumors, some children are unable to reach certain growth and development milestones such as sitting up, walking, and talking in sentences.
The following tests and procedures may be used:
If doctors think there might be a brain tumor, a biopsy may be done to remove a sample of tissue. For tumors in the brain, a part of the skull is removed and a needle is used to remove a sample of 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 may remove as much tumor as safely possible during the same surgery. The pathologist checks the cancer cells to find out the type and grade of brain tumor. The grade of the tumor is based on how abnormal the cancer cells look under a microscope and how quickly the tumor is likely to grow and spread.
The following test may be done on the sample of tissue that is removed:
Sometimes a biopsy or surgery cannot be done safely because of where the tumor formed in the brain or spinal cord. These tumors are diagnosed based on the results of imaging tests and other procedures.
The prognosis depends on the following:
The brain and spinal cord are made of different kinds of cells. Childhood brain tumors and spinal cord tumors can be benign or malignant and are grouped and treated based on the type of cell the tumor formed in and where the tumor began growing in the central nervous system (CNS). Some types of tumors are divided into subtypes based on how the tumor looks under a microscope and whether it has certain gene changes. See the list below for more information about staging and treatment of newly diagnosed and recurrent childhood brain and spinal cord tumors.
See the PDQ summary on Childhood Central Nervous System Atypical Teratoid/Rhabdoid Tumor Treatment for more information.
See the PDQ summary on Childhood Central Nervous System Germ Cell Tumors Treatment for more information on germinomas, embryonal carcinomas, yolk sac tumors, choriocarcinoma, mature teratomas, immature teratomas, teratoma with malignant transformation, and mixed germ cell tumors.
See the PDQ summary on Childhood Craniopharyngioma Treatment for more information.
See the PDQ summary on Childhood Ependymoma Treatment for more information.
See the PDQ summary on Childhood Medulloblastoma and Other Central Nervous System Embryonal Tumors Treatment for more information on medulloblastomas, embryonal tumors, and pineoblastomas.
For more information about childhood brain and spinal cord tumors, see the following:
For more childhood cancer information and other general cancer resources, see the following:
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PDQ® Pediatric Treatment Editorial Board. PDQ Childhood Brain and Spinal Cord Tumors Treatment Overview. Bethesda, MD: National Cancer Institute. Updated <MM/DD/YYYY>. Available at: https://www.cancer.gov/types/brain/patient/child-brain-treatment-pdq. Accessed <MM/DD/YYYY>. [PMID: 26389351]
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