From Surf Wiki (app.surf) — the open knowledge base
Steatocystoma multiplex
| Field | Value |
|---|---|
| name | Steatocystoma multiplex |
| synonyms | Epidermal polycystic disease and Sebocystomatosis |
| image | SkinTumors-P6260388.JPG |
Steatocystoma multiplex is a benign, autosomal dominant congenital condition resulting in multiple cysts on a person's body. Steatocystoma simplex is the solitary counterpart to steatocystoma multiplex.
In steatocystoma multiplex, the tendency to develop cysts is inherited in an autosomal dominant fashion, so one parent can be expected to also have steatocystoma multiplex. It may also occur sporadically. Both males and females may be affected.
The onset at puberty is presumably due to hormonal stimulus of the pilosebaceous unit. They most often arise on the chest and may also occur on the abdomen, upper arms, armpits and face. In some cases cysts may develop all over the body.
The cysts are mostly small (2–20 mm) but they may be several centimetres in diameter. They tend to be soft to firm semi-translucent bumps, and contain an oily, yellow liquid. Sometimes a small central punctum can be identified and they may contain one or more hairs (eruptive vellus hair cysts). They may become inflamed and heal with scarring, like acne nodules (see nodulocystic acne and hidradenitis suppurativa).
On inflammation they can become incredibly painful and reach sizes between 4-6cm in diameter. The area around the cyst can become red and painful to the touch; making mobility, sitting, strenuous movement or everyday activities very difficult and painful.
Steatocystomas are thought to come from an abnormal lining of the passageway to the oil glands (sebaceous duct).
Localised, generalised, facial, acral, and suppurative types of steatocystoma multiplex have been described.
Causes
It is associated with defects in Keratin 17. The condition is inherited in an autosomal dominant manner. This indicates that the defective gene responsible for a disorder is located on an autosome, and only one copy of the defective gene is sufficient to cause the disorder, when inherited from a parent who has the disorder.
However, a solitary case can also emerge in a family with no prior history of the disorder due to the occurrence of a mutation (often referred to as a sporadic or spontaneous mutation).
Diagnosis
It is difficult to diagnose genetic and rare diseases. Healthcare professionals would look at a combination of a patient's medical history, symptoms, physical exam and other laboratory tests to inform their diagnosis.
Treatment
The cysts can be removed via excision, though conventional cyst excision techniques have proven impractical, and a specialized regimen is required.
Cryotherapy and electrodessication may also be tried, but since it is a genetic disorder all the modalities have very little effect.
Individual cysts can be removed surgically. In most cases, small incisions (cuts into the skin) allow the cyst and its contents to be extracted through the opening. If it is tethered to the underlying skin, excision biopsy may be necessary. Cysts can also be removed by laser, electrosurgery or cryotherapy. Inflammation can be reduced with oral antibiotics. Oral isotretinoin is not curative but may temporarily shrink the cysts and reduce inflammation.
References
References
- Freedberg, et al. (2003). ''Fitzpatrick's Dermatology in General Medicine''. (6th ed.). McGraw-Hill. {{ISBN. 0-07-138076-0.
- Davey, Mathew. "Steatocystoma Multiplex".
- (1997). "Missense mutations in keratin 17 cause either pachyonychia congenita type 2 or a phenotype resembling steatocystoma multiplex". J. Invest. Dermatol..
- "Steatocystoma multiplex {{!}} Genetic and Rare Diseases Information Center (GARD) – an NCATS Program".
- (1997). "Five generations with steatocystoma multiplex congenita: a treatment regimen". Plast. Reconstr. Surg..
- "Steatocystoma multiplex {{!}} DermNet NZ".
- "Keratin treatment".
This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.
Ask Mako anything about Steatocystoma multiplex — get instant answers, deeper analysis, and related topics.
Research with MakoFree with your Surf account
Create a free account to save articles, ask Mako questions, and organize your research.
Sign up freeThis content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.
Report