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| This glossary contains: 19186 medical terms |
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Axial
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AxialPosition as it relates to the CNS. Intra-axial is within the CNS; extra-axial is outside the CNS.
RELATED TERMS--------------------------------------
CNS
see Central Nervous System.
SIMILAR TERMS--------------------------------------
Axial tomography, computerized
Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Using the same dosage of radiation as that of an ordinary X-ray machine, an entire slice of the body can be made visible with about 100 times more clarity with the CAT scan.
PREVIOUS AND NEXT TERMS--------------------------------------
Accessible
Refers to tumors that can be approached by a surgical procedure; tumors that are not deep in the brain or beneath vital structures. Inaccessible tumors cannot be approached by standard surgical techniques.
Anaplasia
Characteristics of a cell (structure and orientation) that make it identifiable as a cancer cell. Malignant.
Artifact
Something artificial, a distortion that does not reflect normal anatomy or pathology, not usually found in the body. For example, in radiology, the appearance on an x-ray of a surgical metal clip that obscures the clear view of an anatomical structure.
Ataxic gait
Walking that is clumsy, uncoordinated.
Autologous
Coming from the same individual, as opposed to being donated by another individual.
Axial
Asplenia
The absence of a spleen or one that functions. (The spleen can be functionally destroyed, as occurs in patients with sickle cell disease.) The spleen, an organ located in the upper left part of the abdomen near the stomach, produces lymphocytes, filters blood, serves as a major reservoir for blood, destroys blood cells that are aged, and has an important function in the filtering, phagocytosis (engulfing) and removal of bacteria from the bloodstream. Asplenic patients run a significantly increased risk of severe sepsis (bloodstream infection), especially from the pneumococcus bacterium.
Asplenic
Pertaining to asplenia, the state of being without a spleen or without a functional spleen. The spleen can be functionally destroyed, as by inadequate oxygen supply in sickle cell disease.The spleen, an organ located in the upper left part of the abdomen near the stomach, produces lymphocytes, filters blood, serves as a major reservoir for blood and destroys blood cells that are aged. It also has an important function in the filtering, phagocytosis (ingestion and digestion) and removal of bacteria from the bloodstream. Asplenic patients run a significantly increased risk of severe sepsis (bloodstream infection).
Assay
An assay is an analysis done to determine: 1. The presence of a substance and the amount of that substance. Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid (or hyperthyroid). 2. The biological or pharmacological potency of a drug. For example, an assay may be done of a vaccine to determine its potency.
Assay, CEA
CEA (carcinoembryonic antigen) is a protein found in many types of cells but associated with tumors and the developing fetus. CEA is tested in blood. The normal range is <2.5 ng/ml in an adult non-smoker and <5.0 ng/ml in a smoker.
Assay, NSE
Neuron-specific enolase (NSE) is a substance that has been detected in patients with certain tumors, namely: neuroblastoma, small cell lung cancer, medullary thyroid cancer, carcinoid tumors, endocrine tumors of the pancreas, and melanoma.
RELATED TERMS--------------------------------------
CNS
see Central Nervous System.
SIMILAR TERMS--------------------------------------
Axial tomography, computerized
Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Using the same dosage of radiation as that of an ordinary X-ray machine, an entire slice of the body can be made visible with about 100 times more clarity with the CAT scan.
PREVIOUS AND NEXT TERMS--------------------------------------
Accessible
Refers to tumors that can be approached by a surgical procedure; tumors that are not deep in the brain or beneath vital structures. Inaccessible tumors cannot be approached by standard surgical techniques.
Anaplasia
Characteristics of a cell (structure and orientation) that make it identifiable as a cancer cell. Malignant.
Artifact
Something artificial, a distortion that does not reflect normal anatomy or pathology, not usually found in the body. For example, in radiology, the appearance on an x-ray of a surgical metal clip that obscures the clear view of an anatomical structure.
Ataxic gait
Walking that is clumsy, uncoordinated.
Autologous
Coming from the same individual, as opposed to being donated by another individual.
Axial
Asplenia
The absence of a spleen or one that functions. (The spleen can be functionally destroyed, as occurs in patients with sickle cell disease.) The spleen, an organ located in the upper left part of the abdomen near the stomach, produces lymphocytes, filters blood, serves as a major reservoir for blood, destroys blood cells that are aged, and has an important function in the filtering, phagocytosis (engulfing) and removal of bacteria from the bloodstream. Asplenic patients run a significantly increased risk of severe sepsis (bloodstream infection), especially from the pneumococcus bacterium.
Asplenic
Pertaining to asplenia, the state of being without a spleen or without a functional spleen. The spleen can be functionally destroyed, as by inadequate oxygen supply in sickle cell disease.The spleen, an organ located in the upper left part of the abdomen near the stomach, produces lymphocytes, filters blood, serves as a major reservoir for blood and destroys blood cells that are aged. It also has an important function in the filtering, phagocytosis (ingestion and digestion) and removal of bacteria from the bloodstream. Asplenic patients run a significantly increased risk of severe sepsis (bloodstream infection).
Assay
An assay is an analysis done to determine: 1. The presence of a substance and the amount of that substance. Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid (or hyperthyroid). 2. The biological or pharmacological potency of a drug. For example, an assay may be done of a vaccine to determine its potency.
Assay, CEA
CEA (carcinoembryonic antigen) is a protein found in many types of cells but associated with tumors and the developing fetus. CEA is tested in blood. The normal range is <2.5 ng/ml in an adult non-smoker and <5.0 ng/ml in a smoker.
Assay, NSE
Neuron-specific enolase (NSE) is a substance that has been detected in patients with certain tumors, namely: neuroblastoma, small cell lung cancer, medullary thyroid cancer, carcinoid tumors, endocrine tumors of the pancreas, and melanoma.
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This dictionary contains 19186 terms.
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