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Rad Tech Pathology
Unit 1 Key Terms
Term | Definition |
---|---|
Acute | Having a quick onset and lasting a short period of time with a relatively severe course. |
Asymptomatic | Showing or causing no identifiable symptoms |
Atrophy | A reduction in size or wasting of cells, tissues, or organs as a result of poor nutrition or nonuse |
Autoantibody | Antibody acting against its own tissue or organism. Ex-Lupus-chronic autoimmune disease that can damage any part of the body |
Autoimmunne disorder | Disease in which antibodies form against and injure the patient's own tissues, in contrast to the normal process in which antibodies form in response to foreign antigens. |
Benign Neoplasm | A localized tumor of well-differentiated cells that does not invade surrounding tissue or metastasize to distant areas within the body |
Carcinoma | A malignant growth composed of epithelial cells that tends to invade surrounding tissues and give rise to metastases |
Chronic | Presenting slowly and persisting over a long period of time. |
Congenital | Existing at &usually before birth & resulting from genetic or environmental factors. 2%-3% of all infants born have one or more of these. Usually occur due to abnormalities in the number & distribution of chromosomes. |
Degenerative | Refers to deterioration of the body usually associated with the aging process. Ex- atherosclerosis, osteoporosis, osteoarthritis. |
Diagnosis | The name of a disease an individual is believed to have |
Disease | Any abnormal disturbance of the normal function or structure of a body part, organ, or system; may display a variety of manifestations. |
Dysplasia | Abnormal tissue development. Abnormal changes of mature cells. |
Epidemiology | The investigation of disease in large groups. Distributions of health states (good health, disease, etc.) tend to not be random within a population and are influenced by factors such as biology, social, and environment. |
Etiology | The study of the cause and origin of disease |
Genetic mapping | Used to assign the distance between genetic markers. Can be used to track inheritance traits and diseases that are transmitted from parent to child. |
Genome | The entirety of an organism's hereditary information, including both the genes and the non-coding sequences of DNA and ribonucleic acid (RNA) |
Hematogenous Spread | Spread of malignant cancer through the blood |
Hereditary | Genetically transferred from either parent to child and derived from ancestors |
Hyperplasia | Increase in the number of cells in tissue. Ex-estrogen-secreting ovarian tumor causing endometrial epithelial cells to multiply |
Hypertrophy | Increase in cell size. Ex-muscle _______ due to body building |
Iatrogenic | Pertains to any adverse condition that occurs in a patient as a result of medical treatment. Ex- contrast media reaction during a CT exam. |
Idiopathic | A disease having no identifiable causative factor |
Incidence | A statistical measure that refers to the number of new cases of a disease found in a given time period. A disease of high prevalence in a geographical location is endemic to that area |
Infection | An inflammatory process caused by exposure to some disease-causing organism. |
Inflammatory | Refers to the body process of destroying, diluting, or walling off a localized injurious agent. Most often localized infection is accompanied by this, can occur without infection. |
Invasion | -The spread of cancerous cells into surrounding tissue by virtue of the proximity of the areas. |
Lesion | Term used to describe the various types of cellular changes that can occur in response to a disease |
Leukemia | A malignant disease of the leukocytes and their precursor cells in blood and bone marrow. Stated differently, is a cancer that arises from blood cells. |
Lymphatic Spread | Cancer that spreads through the lymphatic system |
Lymphoma | Neoplastic growth in the lymphatic system |
Malignant Neoplasm | A lesion that grows, spreads, and invades other tissues |
Manifestations | Observable changes resulting from cellular changes in the disease process. |
Metabolism | -The normal physiologic function of the body. An example is dehydration which upsets homeostasis due to a lack of fluid intake |
Metaplasia | Conversion of a specific type of tissue into a different kind of tissue. Ex: smokers’ epithelial cells in the respiratory tract undergo this and change to a different types of epithelial cells. |
Metastatic Spread | The spread of cancer cells. |
Morbidity rate | The incidence in the population of illness sufficient to interfere with an individual's normal daily routine |
Morphology | The form and structure of disease |
Mortality rate | The number of deaths from a particular disease averaged over a population |
Neoplasm | Pertaining to new, abnormal tissue growth. They can be benign or malignant. |
Nosocomial | A disease originating in a hospital |
Pathogenesis | Refers to the sequence of events producing cellular changes that lead to observable changes called manifestations |
Prevalance | A statistical measure that refers to the number of cases of a disease found in a given population |
Prognosis | The prediction of course and outcome for a given disease |
Sarcoma | A type of tumor, often highly malignant, composed of a substance similar to embryonic connective tissue. A cancer that arises from connective tissue |
Seeding | Traveling of cancerous cells to a distant site or distant organ |
Sequelae | Conditions resulting from a disease. Ex-chronic kidney disease can be This in reference to diabetes |
Sign | An objective manifestation of disease perceptible to the managing physician |
Symptom | Any subjective evidence of a disease as perceived by a patient. |
Syndrome | A group of signs and symptoms that occur together and characterize a specific abnormal disturbance |
Traumatic | Pertaining to the effects of a wound or injury, whether physical or psychological. |
Virulence | The ease with which an organism overcomes body defenses. An organism with high ______ is likely to produce diseases in susceptible people |