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Difference between revisions of "Dermal cysts"
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→Digital mucous cyst: +pilonidal cyst
(+alt. term) |
(→Digital mucous cyst: +pilonidal cyst) |
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*[http://www.dermpedia.org/files/images/Digital_mucous_cyst_2.jpg Digital mucous cyst (dermpedia.org)].<ref name=dermpedia>URL: [http://www.dermpedia.org/dermpedia-textbook/digital-mucous-myxoid-cyst http://www.dermpedia.org/dermpedia-textbook/digital-mucous-myxoid-cyst]. Accessed on: 17 January 2012.</ref> | *[http://www.dermpedia.org/files/images/Digital_mucous_cyst_2.jpg Digital mucous cyst (dermpedia.org)].<ref name=dermpedia>URL: [http://www.dermpedia.org/dermpedia-textbook/digital-mucous-myxoid-cyst http://www.dermpedia.org/dermpedia-textbook/digital-mucous-myxoid-cyst]. Accessed on: 17 January 2012.</ref> | ||
==Pilonidal cyst== | |||
*[[AKA]] ''pilonidal sinus''. | |||
===General=== | |||
*Benign. | |||
*Young adults (late teens, early twenties) - usu. men.<ref>URL: [http://www.nhs.uk/conditions/Pilonidal-sinus/Pages/Introduction.aspx http://www.nhs.uk/conditions/Pilonidal-sinus/Pages/Introduction.aspx]. Accessed on: 10 September 2012.</ref> | |||
===Gross=== | |||
*Usually at gluteal folds. | |||
**Uncommon: axilla, genital region, umbilicus, scalp.<ref name=Ref_Derm326>{{Ref Derm|326}}</ref> | |||
===Microscopic=== | |||
Features:<ref name=Ref_Derm326>{{Ref Derm|326}}</ref> | |||
*Cyst or pseudocyst into the deep dermis. | |||
**May be lined by squamous epithelium with inflammation +/-[[pseudoepitheliomatous hyperplasia]]. | |||
*Neutrophils. | |||
*[[Granuloma|Granulomatous inflammation]]. | |||
DDx: | |||
*[[Squamous cell carcinoma of the skin]] with inflammation.<ref name=pmid19482585>{{Cite journal | last1 = Chatzis | first1 = I. | last2 = Noussios | first2 = G. | last3 = Katsourakis | first3 = A. | last4 = Chatzitheoklitos | first4 = E. | title = Squamous cell carcinoma related to long standing pilonidal-disease. | journal = Eur J Dermatol | volume = 19 | issue = 4 | pages = 408-9 | month = | year = | doi = 10.1684/ejd.2009.0705 | PMID = 19482585 }}</ref> | |||
*Infection. | |||
==See also== | ==See also== | ||