Canadian Medical Guide > Diseases > Pathological Conditions, Signs and Symptoms > Pathologic Processes Terms and Definitions




Pathologic Processes

Medical Definition: The abnormal mechanisms and forms involved in the dysfunctions of tissues and organs.
Guide Notes: not used for indexing; DF: PATHOL PROCESSES CATALOG: do not use
Previously Indexed: specific pathologic process (1966-1997)
Pathologic Processes Categories.
Canadian Medical Guide Definition Adhesions - Pathological processes consisting of the union of the opposing surfaces of a wound.
Canadian Medical Guide Definition Ascites - Accumulation or retention of free fluid within the peritoneal cavity.
Canadian Medical Guide Definition Chromosome Aberrations - Abnormal number or structure of chromosomes. Many chromosome aberrations, but not all, are the cause of CHROMOSOME DISORDERS.
Canadian Medical Guide Definition Death - Irreversible cessation of all bodily functions, manifested by absence of spontaneous breathing and total loss of cardiovascular and cerebral functions.
Canadian Medical Guide Definition Disease - A definite pathologic process with a characteristic set of signs and symptoms. It may affect the whole body or any of its parts, and its etiology, pathology, and prognosis may be known or unknown.
Canadian Medical Guide Definition Disease Attributes - Clinical characteristics of disease or illness.
Canadian Medical Guide Definition Diverticulitis - Inflammation of a DIVERTICULUM or diverticula.
Canadian Medical Guide Definition Emphysema - A pathological accumulation of air in tissues or organs.
Canadian Medical Guide Definition Fibrosis - Any pathological condition where fibrous connective tissue invades any organ, usually as a consequence of inflammation or other injury.
Canadian Medical Guide Definition Genomic Instability - An increased tendency of the GENOME to acquire MUTATIONS when various processes involved in maintaining and replicating the genome are dysfunctional.
Canadian Medical Guide Definition Gliosis - The production of a dense fibrous network of neuroglia; includes astrocytosis, which is a proliferation of astrocytes in the area of a degenerative lesion.
Canadian Medical Guide Definition Growth Disorders - Deviations from the average values for a specific age and sex in any or all of the following: height, weight, skeletal proportions, osseous development, or maturation of features. Included here are both acceleration and retardation of growth.
Canadian Medical Guide Definition Hemolysis - The destruction of ERYTHROCYTES by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity.
Canadian Medical Guide Definition Hemorrhage - Bleeding or escape of blood from a vessel.
Canadian Medical Guide Definition Hyperplasia - An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells.
Canadian Medical Guide Definition Hypovolemia - An abnormally low volume of blood circulating through the body. It may result in hypovolemic shock (see SHOCK).
Canadian Medical Guide Definition Inflammation - A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function.
Canadian Medical Guide Definition Intraoperative Complications - Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.
Canadian Medical Guide Definition Lithiasis - A condition characterized by the formation of CALCULI and concretions in the hollow organs or ducts of the body. They occur most often in the gallbladder, kidney, and lower urinary tract.
Canadian Medical Guide Definition Malacoplakia - The formation of soft patches on the mucous membrane of a hollow organ, such as the urogenital tract or digestive tract.
Canadian Medical Guide Definition Menstruation Disturbances - Variations of menstruation which may be indicative of disease.
Canadian Medical Guide Definition Metaplasia - A condition in which there is a change of one adult cell type to another similar adult cell type.
Canadian Medical Guide Definition Multiple Organ Failure - A progressive condition usually characterized by combined failure of several organs such as the lungs, liver, kidney, along with some clotting mechanisms, usually postinjury or postoperative.
Canadian Medical Guide Definition Necrosis - A pathological process caused by the progressive degradative action of enzymes that is generally associated with severe cellular trauma. It is characterized by mitochondrial swelling, nuclear flocculation, uncontrolled cell lysis, and ultimately CELL DEATH.
Canadian Medical Guide Definition Nerve Degeneration - Loss of functional activity and trophic degeneration of nerve axons and their terminal arborizations following the destruction of their cells of origin or interruption of their continuity with these cells. The pathology is characteristic of neurodegenerative diseases. Often the process of nerve degeneration is studied in research on neuroanatomical localization and correlation of the neurophysiology of neural pathways.
Canadian Medical Guide Definition Ossification, Heterotopic - The development of bony substance in normally soft structures.
Canadian Medical Guide Definition Postoperative Complications - Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Canadian Medical Guide Definition Sclerosis - A pathological process consisting of hardening or fibrosis of an anatomical structure, often a vessel or a nerve.
Canadian Medical Guide Definition Stress - A pathological process resulting from the reaction of the body to external forces and abnormal conditions that tend to disturb the organism's homeostasis.
Canadian Medical Guide Definition Ulcer - A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.
Canadian Medical Guide Definition Yang Deficiency - In the YIN-YANG system of philosophy and medicine, a lack of vital energy (called yangxu in Chinese). It manifests itself in various systemic and organic diseases. (The Pinyin Chinese-English Dictionary, 1979)
Canadian Medical Guide Definition Yin Deficiency - In the YIN-YANG system of philosophy and medicine, an insufficiency of body fluid (called yinxu), manifesting often as irritability, thirst, constipation, etc. (The Pinyin Chinese-English Dictionary, 1979).

Pathologic Processes Medical Definitions and Terms

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