Pineal Tumors Glossary of Terms

The following are health and medical definitions of terms that appear in the Pineal Tumors article.

Abdomen: The belly, that part of the body that contains all of the structures between the...

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Abdominal: Relating to the abdomen, the belly, that part of the body that contains all of ...

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Abdominal cavity: The cavity within the abdomen, the space between the abdominal wall and...

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Abnormal: Outside the expected norm, or uncharacteristic of a particular patient.

Absorption: Uptake. For example, intestinal absorption is the uptake of food (or other sub...

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Adjacent: Lying nearby. Related terms include superjacent, subjacent, and circumjacent. Fr...

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Anesthesia: Loss of feeling or awareness, as when an anesthetic is administered before sur...

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Angiogram: An X-ray image of blood vessels. The vessels can be seen because a contrast dye...

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Aqueduct: A channel for the passage of fluid.

Aqueduct of Sylvius: A canal between the third and fourth ventricles in the brain within t...

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Arms: An appendage in anatomy and in clinical trials. See: Arm.

Benign: Not malignant. A benign tumor is one that does not invade surrounding tissue or sp...

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Biopsy: The removal of a sample of tissue for examination under a microscope to check for ...

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Brain: The portion of the central nervous system that is located within the skull. It func...

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Brain tumor: A benign or malignant growth in the brain. Primary brain tumors initially for...

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Calcium: A mineral found mainly in the hard part of bones, where it is stored. Calcium is ...

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Cancer: An abnormal growth of cells which tend to proliferate in an uncontrolled way and, ...

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Cell: The basic structural and functional unit of any living thing. Each cell is a small c...

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Cerebrospinal fluid: A watery fluid that is continuously produced and absorbed and that fl...

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Chemotherapy: 1. In the original sense, a chemical that binds to and specifically k...

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Clinical trial: A study that is intended to evaluate the safety and effectiveness of medic...

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Clinical trials: Trials to evaluate the effectiveness and safety of medications or medical...

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Compress: Cloth or another material applied under pressure to an area of the skin and held...

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Computerized tomography: Pictures of structures within the body created by a computer that...

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CT scan: Computed tomography scan. Detailed images of internal organs are obtained by this...

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Curable: Amenable to a cure, capable of being cured, to being healed and made well. From ...

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Diagnosis: 1 The nature of a disease; the identification of an illness. 2 A ...

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Endoscope: A lighted optical instrument that is used to get a deep look inside the body. A...

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Essential: In medicine, of unknown cause, as in essential hypertension (high blood pressur...

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Germ: 1. A cell or group of cells (called a primordium) capable of developing into ...

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Germ cell: Either the egg or the sperm cell; a reproductive cell. Each mature germ cell is...

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Germinoma: A rare cancer of the germ cells (the tissue that normally differentiates to bec...

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Gland: A group of cells that secrete a substance for use in the body. For example, the thy...

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Headache: A pain in the head with the pain being above the eyes or the ears, behind the he...

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Hormone: A chemical substance produced in the body that controls and regulates the activit...

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Hydrocephalus: Hydrocephalus is an abnormal buildup of cerebrospinal fluid (CSF) in the v...

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Immunotherapy: Treatment to stimulate or restore the ability of the immune (defense) syst...

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Indicate: In medicine, to make a treatment or procedure advisable because of a particular ...

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Indication: 1. In medicine, a condition which makes a particular treatment or proce...

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Intracranial: Within the cranium, the bony dome that houses and protects the brain.

Magnetic resonance imaging: A procedure that uses magnetism, radio waves, and a computer t...

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Malignant: 1. Tending to be severe and become progressively worse, as in malignant ...

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Memory: 1. The ability to recover information about past events or knowledge. ...

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Metabolism: The whole range of biochemical processes that occur within a living organism. ...

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Microscope: An optical instrument that augments the power of the eye to see small objects....

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MRI: Magnetic resonance imaging.

Nausea: Stomach queasiness, the urge to vomit. Nausea can be brought on by many causes, in...

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Onset: In medicine, the first appearance of the signs or symptoms of an illness as, for ex...

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Operation: In medicine, a surgical procedure. Many operations are named after persons. The...

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Pain: An unpleasant sensation that can range from mild, localized discomfort to agony. Pa...

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Pathologist: A physician who identifies diseases and conditions by studying abnormal cells...

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Pineal gland: A small gland that is located near the center of the brain. This gland secre...

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Positron emission tomography: Unlike CT or MRI, which look at anatomy or body form, PET st...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Puberty: Adolescence, the period in which the human body first becomes capable of reproduc...

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Radiation: 1. Rays of energy. Gamma rays and X-rays are two of the types of energy ...

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Radiation therapy: The use of high-energy rays to damage cancer cells, stopping them from ...

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Recurrence: The return of a sign, symptom, or disease after a remission. The reappearance ...

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Remission: Disappearance of the signs and symptoms of cancer or other disease. A remission...

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Scan: As a noun, the data or image obtained from the examination of organs or regions of...

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Shunt: 1) To move a body fluid, such as cerebrospinal fluid, from one place to another. 2...

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Skull: The skull is a collection of bones which encase the brain and give form to the hea...

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SPECT: An acronym that stands for Single Photon Emission Computed Tomography, a nuclear me...

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Stage: As regards cancer, the extent of a cancer, especially whether the disease has spre...

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Stereotactic: Referring to precise positioning in three-dimensional space. For example, bi...

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Stroke: The sudden death of brain cells due to lack of oxygen, caused by blockage of blood...

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Surgeon: A physician who treats disease, injury, or deformity via operative or manual meth...

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Surgery: The branch of medicine that employs operations in the treatment of disease or inj...

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Therapy: The treatment of disease. Therapy is synonymous with treatment.

Tomography: The process for generating a tomogram, a two-dimensional image of a slice or s...

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Tumor: An abnormal mass of tissue. Tumors are a classic sign of inflammation, and can be ...

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Ventricles: 1, The right ventricle and the left ventricle, the lower two chambers o...

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Vital: Necessary to maintain life. For example, breathing is a vital function.

X-ray: High-energy radiation with waves shorter than those of visible light. X-ray is used...

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