caseation


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Related to caseation: tuberculosis, caseation necrosis

caseation

 [ka″se-a´shun]
1. the precipitation of casein.
2. a form of necrosis in which tissue is changed into a dry, amorphous mass resembling cheese. Called also caseous degeneration or necrosis.

ca·se·a·tion

(kā'sē-ā'shŭn),
A form of coagulation necrosis in which the necrotic tissue resembles cheese and contains a mixture of protein and fat that is absorbed very slowly; occurs particularly in tuberculosis.
See also: caseous necrosis.
Synonym(s): tyrosis (2)
[L. caseus, cheese]

caseation

/ca·se·a·tion/ (ka″se-a´shun)
1. the precipitation of casein.
2. necrosis in which tissue is changed into a dry mass resembling cheese.

caseation

(kā′sē-ā′shən)
n.
Necrotic degeneration of bodily tissue into a soft, cheeselike substance.

caseation

[kā′sē·ā′shən]
Etymology: L, caseus, cheese
a form of tissue necrosis in which cellular outline is lost and the appearance is that of crumbly or liquified cheese. It is typical of tuberculosis. See also caseous. caseate, v.

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·a·tion

(kā'sē-ā'shŭn)
A form of coagulation necrosis in which the necrotic tissue resembles cheese and contains a mixture of protein and fat that is absorbed very slowly; occurs particularly in tuberculosis.
See also: caseous necrosis
[L. caseus, cheese]

caseation

Degeneration of dead tissue into a cheese like material. Caseation was a common feature of TUBERCULOSIS of the lungs and led to cavity formation. Also known as caseous degeneration.

caseation

coagulation necrosis characteristic of tuberculous lesions

caseation

1. the precipitation of casein.
2. a form of necrosis in which tissue is changed into a dry, amorphous mass resembling cheese.
References in periodicals archive ?
Histopathologic examination has shown a spectrum of inflammatory changes, including granulomatous lesions with or without caseation (3).
Smaller populations of progressively less active or dormant organisms will be found in caseation tissue and within macrophages.
Tuberculomas have a central zone of caseation necrosis surrounded by a capsule containing few bacilli.
This revealed miliary tuberculosis with diffuse granulomatous disease, caseation necrosis, and acid fast organisms identified at multi-organ sites including the liver, lungs, kidneys and adrenal glands.
In CT investigation, mediastinal lymph node was typically seen with a central hypodense area corresponding to caseation necrosis and ring enhancement after contrast administration (2) (Figure 2).
It is characterized by the presence of epithelioid cell tubercles without caseation.
proliferans, and, most notably, extensive caseation necrosis typical of mycobacterial infection.
Granulomas, with or without caseation, may also be found.
A biopsy of the sinonasal mucosa demonstrated acute and chronic inflammation with diffuse granulomas that had few foci of caseation.
The pathogenesis of pneumothorax in miliary tuberculosis is unclear, but the following mechanisms can be considered: caseation or necrosis of subpleural miliary nodules and their subsequent rupture can cause pneumothorax.
Pathologic findings showed granulomatous inflammation with caseation necrosis, foreign body-type giant cells, and proliferative endarteritis with vascular occlusions.
Neither caseation necrosis nor mitotic figures were identified.