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{{Short description|A type of multinucleated giant cell found in certain medical conditions}}
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{{Use dmy dates|date=October 2023}}
A '''Touton giant cell''' is a type of multinucleated giant cell that is observed in the histopathology of certain diseases. These cells are characterized by their unique appearance, which includes a ring of nuclei arranged in a wreath-like fashion around a central area of cytoplasm. This distinctive feature differentiates Touton giant cells from other types of giant cells, such as [[Langhans giant cell|Langhans giant cells]] and [[Foreign body giant cell|foreign body giant cells]], which are also seen in various pathological conditions.
 
==Formation and Characteristics==
'''Touton giant cells''' are a type of [[multinucleated giant cell]] characterized by a distinctive appearance and are typically found in certain [[granulomatous]] conditions. These cells are named after the German pathologist [[Karl Touton]], who first described them in the early 20th century.
Touton giant cells are formed by the fusion of macrophages, a type of immune cell that plays a crucial role in the body's defense mechanism against pathogens and in the cleanup of cellular debris. The central cytoplasm of Touton giant cells is foamy in appearance, due to the accumulation of lipids. This foamy appearance is a hallmark of these cells and is often associated with conditions involving lipid accumulation or granulomatous reactions.
 
==Clinical Significance==
==Characteristics==
Touton giant cells are most commonly associated with [[xanthoma]]s and [[xanthogranuloma]]s, which are benign tumors or tumor-like masses that arise from the accumulation of lipid-laden macrophages. These cells can also be found in other conditions, such as [[Juvenile xanthogranuloma]], a disorder affecting children that is characterized by the formation of nodules, primarily on the skin, but also potentially affecting other organs.
Touton giant cells are notable for their unique morphology. They contain multiple nuclei that are arranged in a circular pattern, often described as a "wreath-like" formation. The cytoplasm of these cells is typically foamy or vacuolated, which is due to the presence of lipid material. This appearance is a result of the fusion of [[macrophages]], which are a type of [[white blood cell]] involved in the body's immune response.
In addition to their role in benign conditions, the presence of Touton giant cells can also be indicative of certain malignancies and inflammatory conditions. Therefore, their identification in tissue samples can be an important diagnostic clue for pathologists.
 
==Diagnosis==
==Associated Conditions==
The diagnosis of conditions involving Touton giant cells typically involves a combination of clinical evaluation and histopathological examination. Biopsy of the affected tissue followed by microscopic examination is essential for identifying the characteristic appearance of Touton giant cells. Special staining techniques may be employed to highlight the lipid content within these cells and to differentiate them from other types of giant cells.
Touton giant cells are commonly associated with conditions involving lipid metabolism and [[granuloma]] formation. Some of the conditions where these cells are typically found include:
==Treatment==
 
The treatment of conditions associated with Touton giant cells depends on the underlying cause. For benign lesions such as xanthomas and xanthogranulomas, treatment may not be necessary unless the lesions are causing symptoms or cosmetic concerns. In such cases, surgical removal or other local treatments may be considered. For conditions with an underlying inflammatory or malignant cause, treatment will focus on addressing the primary disease.
* [[Juvenile xanthogranuloma]]
[[Category:Pathology]]
* [[Xanthoma]]
* [[Dermatofibroma]]
 
In these conditions, Touton giant cells are often found within the lesions and are indicative of the body's attempt to manage lipid accumulation or foreign material.
 
==Histological Features==
Under the microscope, Touton giant cells can be identified by their characteristic nuclear arrangement and foamy cytoplasm. They are often found in the dermis or subcutaneous tissue, depending on the underlying condition. The presence of these cells can help pathologists in diagnosing specific diseases, particularly those involving lipid storage or granulomatous inflammation.
 
==Images==
[[File:Juvenile_xanthogranuloma_-_very_high_mag.jpg|thumb|right|Micrograph showing a Touton giant cell in juvenile xanthogranuloma.]]
 
==Related pages==
* [[Giant cell]]
* [[Granuloma]]
* [[Macrophage]]
 
==References==
* {{cite book |last1=Weedon |first1=David |title=Weedon's Skin Pathology |edition=4th |year=2015 |publisher=Elsevier |isbn=978-0-7020-6275-2}}
 
[[Category:Histology]]
[[Category:Histology]]
[[Category:Pathology]]
[[Category:Immune system]]
{{Medicine-stub}}

Latest revision as of 03:05, 28 March 2025

Touton giant cell

A Touton giant cell is a type of multinucleated giant cell that is observed in the histopathology of certain diseases. These cells are characterized by their unique appearance, which includes a ring of nuclei arranged in a wreath-like fashion around a central area of cytoplasm. This distinctive feature differentiates Touton giant cells from other types of giant cells, such as Langhans giant cells and foreign body giant cells, which are also seen in various pathological conditions.

Formation and Characteristics[edit]

Touton giant cells are formed by the fusion of macrophages, a type of immune cell that plays a crucial role in the body's defense mechanism against pathogens and in the cleanup of cellular debris. The central cytoplasm of Touton giant cells is foamy in appearance, due to the accumulation of lipids. This foamy appearance is a hallmark of these cells and is often associated with conditions involving lipid accumulation or granulomatous reactions.

Clinical Significance[edit]

Touton giant cells are most commonly associated with xanthomas and xanthogranulomas, which are benign tumors or tumor-like masses that arise from the accumulation of lipid-laden macrophages. These cells can also be found in other conditions, such as Juvenile xanthogranuloma, a disorder affecting children that is characterized by the formation of nodules, primarily on the skin, but also potentially affecting other organs. In addition to their role in benign conditions, the presence of Touton giant cells can also be indicative of certain malignancies and inflammatory conditions. Therefore, their identification in tissue samples can be an important diagnostic clue for pathologists.

Diagnosis[edit]

The diagnosis of conditions involving Touton giant cells typically involves a combination of clinical evaluation and histopathological examination. Biopsy of the affected tissue followed by microscopic examination is essential for identifying the characteristic appearance of Touton giant cells. Special staining techniques may be employed to highlight the lipid content within these cells and to differentiate them from other types of giant cells.

Treatment[edit]

The treatment of conditions associated with Touton giant cells depends on the underlying cause. For benign lesions such as xanthomas and xanthogranulomas, treatment may not be necessary unless the lesions are causing symptoms or cosmetic concerns. In such cases, surgical removal or other local treatments may be considered. For conditions with an underlying inflammatory or malignant cause, treatment will focus on addressing the primary disease.

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