Glossary Terms
brain stem glioma (...glee-OH-muh)
A tumor located in the part of the brain that connects to the spinal cord (the brain stem). It may grow rapidly or slowly, depending on the grade of the tumor.
cerebrospinal fluid diversion
A process used to drain fluid that has built up around the brain and spinal cord. A shunt (a long, thin tube) is placed in a ventricle of the brain and threaded under the skin to another part of the body, usually the abdomen. The shunt carries excess fluid away from the brain so it may be absorbed elsewhere in the body.
chemotherapy (KEE-moh-THAYR-uh-pee)
Treatment with drugs that kill cancer cells.
clinical trial
A type of research study that tests how well new medical approaches work in people. These studies test new methods of screening, prevention, diagnosis, or treatment of a disease. Also called a clinical study.
diffuse
Widely spread; not localized or confined.
drug
Any substance, other than food, that is used to prevent, diagnose,
treat or relieve symptoms of a disease or abnormal condition. Also refers
to a substance that alters mood or body function, or that can be
habit-forming or addictive, especially a narcotic.
glioma (glee-OH-muh)
A cancer of the brain that begins in glial cells (cells that surround and support nerve cells).
low grade
When referring to cancerous and precancerous growths, a term used to describe cells that look nearly normal under a microscope. These cells are less likely to grow and spread quickly than cells in high-grade cancerous or precancerous growths.
neurofibromatosis type 1 (NOOR-oh-FY-broh-muh-TOH-sis tipe 1)
NF1. A rare genetic condition that causes brown spots and tumors on the skin, freckling in skin areas not exposed to the sun, tumors on the nerves, and developmental changes in the nervous system, muscles, bone, and skin. Also called NF1.
palliative therapy (PA-lee-uh-tiv THAYR-uh-pee)
Treatment given to relieve the symptoms
and reduce the suffering caused by cancer and other life-threatening
diseases. Palliative cancer therapies are given together with other cancer
treatments, from the time of diagnosis, through treatment, survivorship,
recurrent or advanced disease, and at the end of life.
pontine
Having to do with the pons (part of the central nervous system, located at the base of the brain, between the medulla oblongata and the midbrain).
quality of life
The overall enjoyment of life. Many clinical trials assess the effects of cancer and its treatment on the quality of life. These studies measure aspects of an individual’s sense of well-being and ability to carry out various activities.
radiation therapy (RAY-dee-AY-shun THAYR-uh-pee)
The use of high-energy radiation from x-rays, gamma rays, neutrons, protons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that travels in the blood to tissues throughout the body. Also called radiotherapy and irradiation.
recurrent cancer (ree-KER-ent KAN-ser)
Cancer that has recurred (come back), usually after a period of time during which the cancer could not be detected. The cancer may come back to the same place as the original (primary) tumor or to another place in the body. Also called recurrence.
stage
The extent of a cancer in the body. Staging is usually based on the size of the tumor, whether lymph nodes contain cancer, and whether the cancer has spread from the original site to other parts of the body.
standard therapy (...THAYR-uh-pee)
In medicine, treatment that experts agree is appropriate, accepted, and widely used. Health care providers are obligated to provide patients with standard therapy. Also called standard of care or best practice.
surgery (SER-juh-ree)
A procedure to remove or repair a part of the body or to find out whether disease is present. An operation.
symptom
An indication that a person has a condition or disease. Some examples of symptoms are headache, fever, fatigue, nausea, vomiting, and pain.
tumor (TOO-mer)
An abnormal mass of tissue that results when cells divide more than they should or do not die when they should. Tumors may be benign (not cancerous), or malignant (cancerous). Also called neoplasm.
watchful waiting
Closely monitoring a patient's condition but withholding treatment until symptoms appear or change. Also called observation.
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