caseation

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]

Farlex Partner Medical Dictionary © Farlex 2012

caseation

(kā′sē-ā′shən)

Necrotic degeneration of bodily tissue into a soft, cheeselike substance.

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)

[L. caseus, cheese]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

References in periodicals archive ?

Reactivation tuberculosis is characterized by chronic tissue lesions, the formation of tubercles, caseation, and fibrosis.

STUDY OF PREVALENCE OF TUBERCULOSIS AND RIFAMPICIN RESISTANT TUBERCULOSIS AMONG THE SAMPLE RECEIVED AT CB-NAAT CENTER IN A TERTIARY CARE HOSPITAL ANMMCH, GAYA

Histopathological examination of sinus tract under the magnification of 20 showing the presence of granuloma with no central caseation (arrow)

Suture Granuloma 14 Years Following Partial Thyroidectomy Masquerading as Tuberculosis af The Sinus Tract

Caseation within the tubercles is seen in about half the cases and is rarely marked.

An Unusual Presentation of Lupus Vulgaris and the Practical Usefulness of Dermatoscopy

This diagnosis was presumed by the presence of necrotizing granulomatous necrosis with caseation with a strongly positive Mantoux test of 25 mm (Figure 3), and later was supported by a marked response to antituberculous medication.

Tuberculous Pachymeningitis Presenting as a Diffused Dural Thickening in a Patient with Chronic Headache and Recurrent Neurological Abnormalities for More than a Decade: A Case Report and a Review of the Literature

Mycobacterium tuberculosis cultures assisted in definitive decision-making but granulomatous inflammation could not be anticipated when the specimens were initially processed except when visible caseation was encountered.

Diagnostic dilemma of granulomatous inflammation in cancer patients

used the following laparoscopic criteria such as findings of tubercles, caseation, granulomas, beaded tubes, tuboovarian masses, fimbrial agglutination, and hydrosalpinx to suggest TB.

Abdominopelvic Tuberculosis Secondary to a Nontuberculous Mycobacterium in an Immunocompetent Patient

However, histopathology was consistent with acute suppurative pericarditis on top of chronic granulomatous inflammation with Langhans-type giant cells and caseation necrosis, indicative of tuberculous pericarditis with superimposed bacterial pericarditis.

A Rare Case of Pneumopericardium in the Setting of Tuberculous Constrictive Pericarditis

Small discrete anechoic areas, representing zones of caseation, may be seen within the nodes [2].

Caecal Perforation from Primary Intestinal Tuberculosis in Pregnancy

Instead, a considerable number of ITB cases had biopsies with features of chronic inflammation or granulomas without caseation, a finding consistent with other reports.[sup][8],[9],[10] In addition, multiple target biopsies, deep biopsy, and the culture of the biopsy material might increase the diagnostic yield.[sup][14],[15] Biopsy specimens obtained surgically usually provide confirmative diagnosis, and surgery might be considered in some selected difficult cases.

Clinical and Laboratory Diagnosis of Intestinal Tuberculosis

Microscopic examination showed numerous epithelioid cell granulomas with Langhans giant cells and large areas of caseation necrosis in the pancreas.

Pancreatic tuberculosis with markedly elevated CA 19-9 levels: a diagnostic pitfall

Diagnosis of tuberculosis was confirmed on finding typical granulomas comprising of lymphocytes, Langhans type giant cells with or without caseation.

EXTRAPULMONARY CERVICAL TUBERCULOUS LYMPHADENOPATHY: MORE COMMON THAN WE THINK - A TERTIARY CARE HOSPITAL EXPERIENCE

Contrast enhanced CT scan (CECT) of neck showed multiple lymph nodes at level IV on the right side and in the right supraclavicular region showing peripheral rim enhancement with central caseation necrosis (Figures 4, 5, and 6).

Internal Jugular Vein Thrombosis in Isolated Tuberculous Cervical Lymphadenopathy

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