The 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 need treatment.
is the largest part of the brain. It is at the top of the head. The cerebrum controls thinking, learning, problem solving, emotions, speech, reading, writing, and voluntary movement.
in the lower back of the brain (near the middle of the back of the head). It controls movement, balance, and
The brain stem
connects the brain to the spinal cord. It is
in the lowest part of the brain (just above the back of the neck). The
brain stem controls breathing, heart rate, and the nerves
and muscles used in seeing, hearing, walking, talking, and eating.
The spinal cord connects the brain with nerves in most parts of the body.
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. These 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.
Brain and spinal cord tumors are a common type of childhood cancer.
This summary describes the treatment of primary
brain and spinal cord tumors (tumors that begin in the
brain and spinal cord). Treatment of metastatic
brain and spinal cord tumors is not covered in
this summary. Metastatic tumors are formed by cancer cells that begin in other parts of the body and spread to the brain or spinal cord.
The cause of most childhood brain and spinal cord tumors is unknown.
The signs and symptoms of childhood brain and spinal cord tumors are not the same in every child.
Signs and symptoms depend on the following:
Where the tumor forms in the brain or spinal cord.
The size of the tumor.
How fast the tumor grows.
The child's age and development.
Signs and symptoms may be caused by childhood brain and spinal cord tumors or by other conditions, including cancer that has spread to the brain. Check with your child's doctor if your child has any of the following:
Brain Tumor Signs and Symptoms
Morning headache or headache that goes away after vomiting.
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.
Tests that examine the brain and spinal cord are used to
detect (find) childhood brain and spinal cord tumors.
The following tests and procedures may be used:
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.
(magnetic resonance imaging) with gadolinium: A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of the brain and spinal cord. 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).
Serum tumor marker test: A procedure in which a sample of blood
is examined to measure the amounts of certain substances released into the blood by organs, tissues, or tumor cells in the body. Certain substances are linked to specific types of cancer when found in increased levels in the blood. These are called tumor markers.
Most childhood brain tumors are diagnosed and removed in surgery.
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, the biopsy is done by removing part of the skull
and using a needle to remove a sample of tissue. 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:
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.
Some childhood brain and spinal cord tumors are diagnosed by imaging tests.