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

1. the precipitation of casein.
2. a form of necrosis in which tissue is changed into a dry, amorphous mass resembling cheese.
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References in periodicals archive ?
We recommend that when granulomatous inflammation is suspected, or when visible caseation is encountered surgically, the sample should also be submitted in appropriate medium for processing in the microbiology laboratory for MTB culture studies in addition to histopathological review.
Diagnostic dilemma of granulomatous inflammation in cancer patients
If ZN staining is not done, the thin caseation commonly present in these cases can be mistaken for pus, and the case wrongly labeled as pyogenic lymphadenitis.
Frequency of tuberculosis in cervical lymphadenopathy
16 The two histological features which specifically point towards the diagnosis of tuberculosis are variation in the size of the granulomata and the presence of caseation necrosis.
EXTRAPULMONARY CERVICAL TUBERCULOUS LYMPHADENOPATHY: MORE COMMON THAN WE THINK - A TERTIARY CARE HOSPITAL EXPERIENCE
Both USG and CT scan show number and extent of cervical lymph nodes, central caseation necrosis, matted lymph nodes, IJV invasion, and IJV thrombus.
Internal Jugular Vein Thrombosis in Isolated Tuberculous Cervical Lymphadenopathy
Caseation is usually absent, but there may be central fibrinoid necrosis.
Hepatic Granulomas: A Review With Emphasis on Infectious Causes
The nodes are usually matted together with hypodense centers which probably is due to caseation and many occasionally contain calcification1314.
A REVIEW OF PATTERNS OF CT SCAN APPEARANCES OF ABDOMINAL TUBERCULOSIS
4) Hip infection is similar to progression in lungs with chronic granulomatous inflammation and caseation necrosis.
Osteoarticular tuberculosis
Granulomatous inflammation with caseation was the commonest finding, seen in all cases corresponding to strictures and ulceration on gross examination.
Spectrum of pathologies in cases of intestinal obstruction and perforation based on histopathological examination of resected intestine - Report from a third world country
Caseation and demonstration of acid fast bacilli on cytology are almost always suggestive of tuberculous aetiology but problems arise when cytological evidences are inconclusive (for example, poorly-formed granuloma, neutrophilic infiltration, absence of acid fast bailli, etc.
Cervical lymphadenopathy--pitfalls of blind antitubercular treatment
29%) were reported tuberculosis with extensive Caseation necrosis and n=3 (4.
ROLE OF FINE NEEDLE ASPIRATION CYTOLOGY FOR THE DIAGNOSIS OF TUBERCULOSIS AND FREQUENCY OF ITS PRESENTATION AS COLD ABSCESS IN LOWER SINDH
Histological analysis of fast frozen section demonstrated a chronic granulomatous inflammation with caseation, a character of tuberculosis.
Evaluation of an enzyme-linked immunospot assay for the immunodiagnosis of atypical spinal tuberculosis (atypical clinical presentation/atypical radiographic presentation) in China
2,4,5) On ultrasound three morphologic forms of BTb are known (6) and they are the nodular pattern which may be mistaken for a fibroadenoma or carcinoma (12) (10), diffuse form that results in caseation and sinus formation, and a sclerosing form which manifests as dense, fibrotic breast tissue and is slow growing in the absence of any suppuration.
Ultrasound review of seven cases of breast tuberculosis

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