Epidermoid cyst
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| Epidermoid cyst Classification and external resources | |
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| Epidermal Cyst, ear | |
| ICD-10 | L72.0 |
| ICD-9 | 706.2 |
| OMIM | 131600 |
| DiseasesDB | 29388 |
| eMedicine | derm/860 |
| MeSH | D004814 |
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An epidermoid cyst is a benign cyst, developed out of ectodermal tissue. Histologically, it is made of a thin layer of squamous epithelium.
It's very common for women and can be found on the major or minor labia.
Terminology
The more general term for an Epidermal Inclusion Cyst (which strictly means implantation of epidermal elements into the dermis), Epidermoid cyst includes cysts originating from the infundibular portion of the hair follicle.
The majority of Epidermal Inclusion Cysts do in fact originate from the infundibular portion of the hair follicle thus explaining the interchangeable,[1] yet technically incorrect, use of these two terms.
Causes
These cysts are caused by a bacterium and form into a pimple-like shape.
Presentation
It's very common for women and can be found on the major or minor labia. For some individuals, it doesn't even irritate. For others, it can hurt and when touched, it can release pus. If any of this occurs, its best to discuss it with a doctor.
In contrast to pilar cysts, epidermoid cysts usually present on parts of the body with relatively little hair.[1]
Although they are not malignant, it is possible for malignant tumors to arise from them.[1]
Diagnosis
MRT isointens, FLAIR hyperintens.
Treatment
Cysts can be removed by excision.[1]
See also
- Sebaceous cyst (since L72.0 is often mixed up with L72.1)
References
External links
de:Epidermoidzyste
ja:類表皮嚢胞
nl:epidermoïd cyste
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
