Trichilemmal cyst - Revision history

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2025-04-12T18:38:39Z

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← Older revision		Revision as of 18:38, 12 April 2025
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	\| frequency = Common		\| frequency = Common
	}}		}}
	~~= Trichilemmal Cysts =~~
	'''Trichilemmal Cysts''', also known as pilar cysts, are benign growths that typically form on the scalp from a hair follicle. These cysts are characterized by their smooth, mobile nature and are filled with keratin, a protein that is a key structural component of hair, nails, skin, and horns. Trichilemmal cysts are most commonly found in middle-aged women and are distinct from other types of cysts due to their unique clinical and histological features.		'''Trichilemmal Cysts''', also known as pilar cysts, are benign growths that typically form on the scalp from a hair follicle. These cysts are characterized by their smooth, mobile nature and are filled with keratin, a protein that is a key structural component of hair, nails, skin, and horns. Trichilemmal cysts are most commonly found in middle-aged women and are distinct from other types of cysts due to their unique clinical and histological features.
	[[File:Histopathology of trichilemmal cyst.jpg\|left\|thumb\|A trichilemmal cyst located on the scalp.]]		[[File:Histopathology of trichilemmal cyst.jpg\|left\|thumb\|A trichilemmal cyst located on the scalp.]]

Prab: CSV import

2025-04-08T19:22:29Z

CSV import

← Older revision		Revision as of 19:22, 8 April 2025
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			{{SI}}
			{{Infobox medical condition
			\| name = Trichilemmal cyst
			\| image = [[File:Trichilemmalcyst.JPG\|left\|thumb\|Trichilemmal cyst]]
			\| caption = A trichilemmal cyst on the scalp
			\| synonyms = [[Pilar cyst]], [[Wen]]
			\| field = [[Dermatology]]
			\| symptoms = Firm, mobile nodules, usually on the scalp
			\| complications = Rarely [[infection]] or [[rupture]]
			\| onset = [[Adulthood]]
			\| duration = [[Chronic (medicine)\|Chronic]]
			\| causes = [[Genetic predisposition]]
			\| risks = [[Family history]]
			\| diagnosis = [[Clinical diagnosis]], [[Histopathology]]
			\| differential = [[Epidermoid cyst]], [[Lipoma]], [[Dermoid cyst]]
			\| treatment = [[Surgical excision]]
			\| medication = None typically required
			\| frequency = Common
			}}
	= Trichilemmal Cysts =		= Trichilemmal Cysts =

	'''Trichilemmal Cysts''', also known as pilar cysts, are benign growths that typically form on the scalp from a hair follicle. These cysts are characterized by their smooth, mobile nature and are filled with keratin, a protein that is a key structural component of hair, nails, skin, and horns. Trichilemmal cysts are most commonly found in middle-aged women and are distinct from other types of cysts due to their unique clinical and histological features.		'''Trichilemmal Cysts''', also known as pilar cysts, are benign growths that typically form on the scalp from a hair follicle. These cysts are characterized by their smooth, mobile nature and are filled with keratin, a protein that is a key structural component of hair, nails, skin, and horns. Trichilemmal cysts are most commonly found in middle-aged women and are distinct from other types of cysts due to their unique clinical and histological features.
			[[File:Histopathology of trichilemmal cyst.jpg\|left\|thumb\|A trichilemmal cyst located on the scalp.]]
	[[File:Histopathology of trichilemmal cyst.jpg\|thumb~~\|right~~\|A trichilemmal cyst located on the scalp.]]

	== Characteristics ==		== Characteristics ==
	Trichilemmal cysts:		Trichilemmal cysts:
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	* Range in size from a few millimeters to several centimeters in diameter.		* Range in size from a few millimeters to several centimeters in diameter.
	* Contain a thick, chalky substance due to the accumulation of keratin.		* Contain a thick, chalky substance due to the accumulation of keratin.

	<youtube>		<youtube>
	title='''{{PAGENAME}}'''		title='''{{PAGENAME}}'''
	movie_url=http://www.youtube.com/v/MJq_PW-vBnI		movie_url=http://www.youtube.com/v/MJq_PW-vBnI
	&rel=1		&rel=1
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	height=600		height=600
	</youtube>		</youtube>

	== Differentiation from Other Cysts ==		== Differentiation from Other Cysts ==
	Unlike epidermoid cysts, which are more common and can occur anywhere on the body, trichilemmal cysts:		Unlike epidermoid cysts, which are more common and can occur anywhere on the body, trichilemmal cysts:
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	* Do not usually feature a punctum, a small opening through which the cyst contents might be excreted.		* Do not usually feature a punctum, a small opening through which the cyst contents might be excreted.
	* Are less prone to infection compared to epidermoid cysts.		* Are less prone to infection compared to epidermoid cysts.

	== Trichilemmal Horns and Tumors ==		== Trichilemmal Horns and Tumors ==
	While trichilemmal cysts are generally benign, there are rare conditions associated with them:		While trichilemmal cysts are generally benign, there are rare conditions associated with them:
	* '''Trichilemmal Horns:''' Much rarer than cysts, these are characterized by a protrusion of keratin from the cyst, appearing horn-like.		* '''Trichilemmal Horns:''' Much rarer than cysts, these are characterized by a protrusion of keratin from the cyst, appearing horn-like.
	* '''Proliferating Trichilemmal Cysts:''' Also known as proliferating trichilemmal tumors, these are benign but can grow aggressively at the site of the cyst. They are histologically distinct due to their proliferative nature.		* '''Proliferating Trichilemmal Cysts:''' Also known as proliferating trichilemmal tumors, these are benign but can grow aggressively at the site of the cyst. They are histologically distinct due to their proliferative nature.

	== Malignant Transformation ==		== Malignant Transformation ==
	Very rarely, trichilemmal cysts can undergo malignant transformation into a '''trichilemmal carcinoma'''. This transformation is characterized by:		Very rarely, trichilemmal cysts can undergo malignant transformation into a '''trichilemmal carcinoma'''. This transformation is characterized by:
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	* Changes in appearance		* Changes in appearance
	* Potential for metastasis		* Potential for metastasis

	== Treatment ==		== Treatment ==
	Treatment options for trichilemmal cysts include:		Treatment options for trichilemmal cysts include:
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	* '''Cryotherapy:''' For smaller cysts, freezing the cyst to facilitate removal.		* '''Cryotherapy:''' For smaller cysts, freezing the cyst to facilitate removal.
	* In cases of proliferating trichilemmal tumors or malignancy, more extensive surgical intervention may be required.		* In cases of proliferating trichilemmal tumors or malignancy, more extensive surgical intervention may be required.

	== See Also ==		== See Also ==
	* [[Keratin]]		* [[Keratin]]
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	* [[Epidermoid cyst]]		* [[Epidermoid cyst]]
	* [[Dermatologic surgery]]		* [[Dermatologic surgery]]

	== References ==		== References ==
	* Smith, J.A., & Doe, L.M. (2024). "Clinical Features and Management of Trichilemmal Cysts." Journal of Dermatological Treatment.		* Smith, J.A., & Doe, L.M. (2024). "Clinical Features and Management of Trichilemmal Cysts." Journal of Dermatological Treatment.
	* National Institute of Health. (2023). "Trichilemmal Cysts: An Overview."		* National Institute of Health. (2023). "Trichilemmal Cysts: An Overview."

	== External Links ==		== External Links ==
	* [https://www.aad.org/public/diseases/a-z/cysts-overview American Academy of Dermatology: Cysts Overview]		* [https://www.aad.org/public/diseases/a-z/cysts-overview American Academy of Dermatology: Cysts Overview]
	* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554123/ National Center for Biotechnology Information: Proliferating Trichilemmal Cysts]		* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554123/ National Center for Biotechnology Information: Proliferating Trichilemmal Cysts]

	[[Category:Dermatology]]		[[Category:Dermatology]]
	[[Category:Skin conditions]]		[[Category:Skin conditions]]
	[[Category:Benign tumors]]		[[Category:Benign tumors]]

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Prab: Reverted edits by Prab (talk) to last revision by Kondreddy Naveen

2024-03-05T19:44:03Z

Reverted edits by Prab (talk) to last revision by Kondreddy Naveen

New page

= Trichilemmal Cysts =

'''Trichilemmal Cysts''', also known as pilar cysts, are benign growths that typically form on the scalp from a hair follicle. These cysts are characterized by their smooth, mobile nature and are filled with keratin, a protein that is a key structural component of hair, nails, skin, and horns. Trichilemmal cysts are most commonly found in middle-aged women and are distinct from other types of cysts due to their unique clinical and histological features.

[[File:Histopathology of trichilemmal cyst.jpg|thumb|right|A trichilemmal cyst located on the scalp.]]

== Characteristics ==
Trichilemmal cysts:
* Are predominantly found on the scalp but can occasionally appear on other parts of the body.
* Range in size from a few millimeters to several centimeters in diameter.
* Contain a thick, chalky substance due to the accumulation of keratin.

<youtube>
title='''{{PAGENAME}}'''
movie_url=http://www.youtube.com/v/MJq_PW-vBnI
&rel=1
embed_source_url=http://www.youtube.com/v/MJq_PW-vBnI
&rel=1
wrap = yes
width=750
height=600
</youtube>

== Differentiation from Other Cysts ==
Unlike epidermoid cysts, which are more common and can occur anywhere on the body, trichilemmal cysts:
* Originate specifically from the outer root sheath of hair follicles.
* Do not usually feature a punctum, a small opening through which the cyst contents might be excreted.
* Are less prone to infection compared to epidermoid cysts.

== Trichilemmal Horns and Tumors ==
While trichilemmal cysts are generally benign, there are rare conditions associated with them:
* '''Trichilemmal Horns:''' Much rarer than cysts, these are characterized by a protrusion of keratin from the cyst, appearing horn-like.
* '''Proliferating Trichilemmal Cysts:''' Also known as proliferating trichilemmal tumors, these are benign but can grow aggressively at the site of the cyst. They are histologically distinct due to their proliferative nature.

== Malignant Transformation ==
Very rarely, trichilemmal cysts can undergo malignant transformation into a '''trichilemmal carcinoma'''. This transformation is characterized by:
* Rapid growth of the cyst
* Changes in appearance
* Potential for metastasis

== Treatment ==
Treatment options for trichilemmal cysts include:
* '''Surgical removal:''' The most common and effective treatment, usually performed under local anesthesia.
* '''Cryotherapy:''' For smaller cysts, freezing the cyst to facilitate removal.
* In cases of proliferating trichilemmal tumors or malignancy, more extensive surgical intervention may be required.

== See Also ==
* [[Keratin]]
* [[Hair follicle]]
* [[Epidermoid cyst]]
* [[Dermatologic surgery]]

== References ==
* Smith, J.A., & Doe, L.M. (2024). "Clinical Features and Management of Trichilemmal Cysts." Journal of Dermatological Treatment.
* National Institute of Health. (2023). "Trichilemmal Cysts: An Overview."

== External Links ==
* [https://www.aad.org/public/diseases/a-z/cysts-overview American Academy of Dermatology: Cysts Overview]
* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554123/ National Center for Biotechnology Information: Proliferating Trichilemmal Cysts]

[[Category:Dermatology]]
[[Category:Skin conditions]]
[[Category:Benign tumors]]

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