caseous necrosis


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Related to caseous necrosis: granuloma, tuberculosis, Fibrinoid necrosis

necrosis

 [nĕ-kro´sis, ne-kro´sis] (Gr.)
the morphological changes indicative of cell death caused by enzymatic degradation.
aseptic necrosis necrosis without infection or inflammation.
acute tubular necrosis acute renal failure with mild to severe damage or necrosis of tubule cells, usually secondary to either nephrotoxicity, ischemia after major surgery, trauma (see crush syndrome), severe hypovolemia, sepsis, or burns. See also lower nephron nephrosis.
Balser's fatty necrosis gangrenous pancreatitis with omental bursitis and disseminated patches of necrosis of fatty tissues.
bridging necrosis septa of confluent necrosis bridging adjacent central veins of hepatic lobules and portal triads characteristic of subacute hepatic necrosis.
caseous necrosis caseation (def. 2).
central necrosis necrosis affecting the central portion of an affected bone, cell, or lobule of the liver.
cheesy necrosis caseation (def. 2).
coagulation necrosis death of cells, the protoplasm of the cells becoming fixed and opaque by coagulation of the protein elements, the cellular outline persisting for a long time.
colliquative necrosis liquefactive necrosis.
fat necrosis necrosis in which fat is broken down into fatty acids and glycerol, usually occurring in subcutaneous tissue as a result of trauma.
liquefactive necrosis necrosis in which the necrotic material becomes softened and liquefied.
massive hepatic necrosis massive, usually fatal, necrosis of the liver, a rare complication of viral hepatitis (fulminant hepatitis) that may also result from exposure to hepatotoxins or from drug hypersensitivity.
moist necrosis necrosis in which the dead tissue is wet and soft.
postpartum pituitary necrosis see postpartum pituitary necrosis.
selective myocardial cell necrosis myofibrillar degeneration.
subcutaneous fat necrosis of newborn a benign, self-limited disease affecting term newborns and young infants, characterized by circumscribed, indurated, nodular areas of fat necrosis. It is thought to be related to trauma on bony prominences during delivery, hypothermia, asphyxia, or maternal diabetes; it usually resolves spontaneously by 2 to 4 weeks with no scarring. Called also adiponecrosis neonatorum or subcutanea.
Zenker's necrosis hyaline degeneration and necrosis of striated muscle; called also Zenker's degeneration.

ca·se·ous ne·cro·sis

, caseation necrosis
necrosis characteristic of certain inflammations (for example, tuberculosis, histoplasmosis), which represents necrosis with loss of separate structures of the various cellular and histologic elements; affected tissue manifests the friable, crumbly consistency and dull, opaque quality observed in cheese.

caseous necrosis

necrosis that transforms tissue into a dry cheeselike mass. It occurs primarily in tuberculosis. Also called caseation necrosis. See also cheesy necrosis.
enlarge picture
Caseous necrosis on a tuberculous lung

tyrosis

An obsolete term for:
(1) Caseation (necrosis); 
(2) Precipitation of casein (the phosphoprotein family found in mammalian milk);
(3) Vomiting of milk curds by infants; popularly, “spit up”.

ca·se·ous ne·cro·sis

, caseation necrosis (kā'sē-ŭs nĕ-krō'sis, kā-sē-ā'shŭn)
Necrosis characteristic of certain inflammations (e.g., tuberculosis, histoplasmosis); affected tissue manifests the friable, crumbly consistency and dull, opaque quality observed in cheese.
Synonym(s): caseous degeneration.

ca·se·ous ne·cro·sis

, caseation necrosis (kā'sē-ŭs nĕ-krō'sis, kā-sē-ā'shŭn)
Necrosis characteristic of some inflammations; affected tissue manifests the crumbly consistency and dull opaque quality of cheese. Also called caseous degeneration.

necrosis

pl. necroses [Gr.] the morphological changes indicative of cell death caused by enzymatic degradation.

aseptic necrosis
necrosis without infection or inflammation.
caseous necrosis
necrosis in which the tissue is soft, dry and cheesy, occurring typically in tuberculosis.
central necrosis
necrosis affecting the central portion of an affected bone, cell or lobule of the liver.
cheesy necrosis
that in which the tissue resembles cottage cheese; most often seen in tuberculosis.
coagulation necrosis
death of cells, the protoplasm of the cells becoming fixed and opaque by coagulation of the protein elements, the cellular outline persisting for a long time.
colliquative necrosis
see liquefactive necrosis (below).
liquefactive necrosis
necrosis in which the necrotic material becomes softened and liquefied.
moist necrosis
necrosis in which the dead tissue is wet and soft.
Zenker's necrosis
hyaline degeneration and necrosis of striated muscle; called also Zenker's degeneration.
References in periodicals archive ?
Despite the longer course of inflammatory processes in the peritoneum, microscopically there was a typical alterative character with miliary foci and extensive areas of caseous necrosis without expressed productive reaction.
20-27) In many of these cases, the granulomatous inflammation is associated with evidence of caseous necrosis related to the surgical procedure, as well as hemosiderin-type pigment.
In surgical specimens, caseous necrosis and necrotizing lymph adenitis characteristic of tuberculosis and yersiniosis were absent.
Other histopathologic findings included generalized moderate hepatocellular atrophy and focal to diffuse aggregates of lymphocytes, plasma cells, and maerophages, some of which had centers of caseous necrosis, in the renal interstitium.
A large area of caseous necrosis was surrounded by a histiocytic mantle.