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Difference between revisions of "Eccrine hidrocystoma"
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'''Eccrine hidrocystoma''' is a benign lesion of the [[eye]]lid. | |||
It is occasionally spelled ''eccrine hydrocystoma''.<ref name=pmid10065300/> | |||
==General== | |||
*Benign. | |||
*Eyelid lesion. | |||
Clinical DDx:<ref name=pmid10065300/> | |||
*Cystic [[BCC]]. | |||
==Microsopic== | |||
Features:<ref name=pmid15205675>{{Cite journal | last1 = Singh | first1 = AD. | last2 = McCloskey | first2 = L. | last3 = Parsons | first3 = MA. | last4 = Slater | first4 = DN. | title = Eccrine hidrocystoma of the eyelid. | journal = Eye (Lond) | volume = 19 | issue = 1 | pages = 77-9 | month = Jan | year = 2005 | doi = 10.1038/sj.eye.6701404 | PMID = 15205675 }}</ref><ref>{{Ref Derm|314}}</ref> | |||
*Cyst lined by a bland bilayer. | |||
**Inner lining cells have: | |||
***Small, round nuclei - usu. basal. | |||
***Moderate pale/greyish cytoplasm. | |||
***No apocrine snouts - flat surface. | |||
**Outer lining cells - spindled. | |||
***May be difficult to see. | |||
Note: | |||
*According to the CMAJ, it has the histology of an [[epidermal inclusion cyst]].<ref name=pmid10065300>{{Cite journal | last1 = Adams | first1 = SP. | title = Dermacase. Eccrine hydrocystoma. | journal = Can Fam Physician | volume = 45 | issue = | pages = 297, 306 | month = Feb | year = 1999 | doi = | PMID = 10065300 |PMC = 2328272 }}</ref> | |||
DDx: | |||
*[[Apocrine hidrocystoma]] - have apocrine snouts; surface is ''not'' flat. | |||
*Cystadenoma - has epithelial proliferation. | |||
===Image=== | |||
<gallery> | |||
Image:SkinTumors-P7110453.JPG | Apocrine hidrocystoma (AH). AH looks similar to ''eccrine hidrocystoma''. (WC) | |||
</gallery> | |||
www: | |||
*[http://www.nature.com/eye/journal/v19/n1/fig_tab/6701404f1.html Eccrine hidrocystoma (nature.com)]. | |||
*[http://www.dermnet.org.nz/pathology/apocrine-hidrocystoma-path.html Apocrine hidrocystoma (dermnet.org)]. | |||
*[http://www.flickr.com/photos/42574434@N03/9519309216 Apocrine hidrocystoma (flickr.com)]. | |||
==Sign out== | |||
<pre> | |||
SKIN LESION, ADJACENT TO RIGHT EYELID, EXCISION: | |||
- ECCRINE HIDROCYSTOMA. | |||
</pre> | |||
===Micro=== | |||
The sections show hair bearing skin with a cyst lined by a bland bilayered epithelium. The predominant lining cell has moderate pale grey cytoplasm and a small round nucleus. | |||
The lesion is excised in the plane of section. | |||
==See also== | |||
*[[Eye]]. | |||
==References== | |||
{{Reflist|1}} | |||
[[Category:Diagnosis]] | [[Category:Diagnosis]] | ||