Trichilemmal cyst
Trichilemmal Cyst
Trichilemmal Cyst (pronunciation: trik-i-lem-al sist), also known as a Pilar Cyst, is a type of skin cyst that originates from the outer hair root sheath, specifically the trichilemma.
Etymology
The term "Trichilemmal Cyst" is derived from the Greek words "trichos" meaning hair, and "lemma" meaning husk. It refers to the part of the hair follicle known as the trichilemma, from which these cysts originate.
Description
A Trichilemmal Cyst is typically a smooth, round bump that can be felt under the skin. It is most commonly found on the scalp and is filled with keratin, a protein that is a key component in hair, skin, and nails. These cysts are usually benign (non-cancerous), but in rare cases, they can become malignant (cancerous).
Related Terms
- Trichilemma: The part of the hair follicle from which a Trichilemmal Cyst originates.
- Keratin: A protein that is a key component in hair, skin, and nails, and which fills a Trichilemmal Cyst.
- Benign: A term used to describe a condition that is not harmful in effect. In the context of a Trichilemmal Cyst, it means the cyst is not cancerous.
- Malignant: A term used to describe a condition that is harmful in effect. In the context of a Trichilemmal Cyst, it means the cyst is cancerous.
See Also
External links
- Medical encyclopedia article on Trichilemmal cyst
- Wikipedia's article - Trichilemmal cyst
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