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Difference between revisions of "Eye"
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*Choroid. | *Choroid. | ||
= | =Benign entities= | ||
==Pinguecula== | ==Pinguecula== | ||
*Plural ''Pingueculae''. | *Plural ''Pingueculae''. | ||
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Features: | Features: | ||
*Same histology as [[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> | *Same histology as [[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> | ||
==Chalazion== | ==Chalazion== | ||
| Line 173: | Line 153: | ||
Features (closed angle): | Features (closed angle): | ||
*Cornea and iris opposed to one another. | *Cornea and iris opposed to one another. | ||
=Malignant entities= | |||
==Retinoblastoma== | |||
===General=== | |||
*Rare. | |||
*Malignant. | |||
*May be familial.<ref name=pmid20687510>{{cite journal |author=Lohmann D |title=Retinoblastoma |journal=Adv. Exp. Med. Biol. |volume=685 |issue= |pages=220–7 |year=2010 |pmid=20687510 |doi= |url=}}</ref> | |||
===Microscopic=== | |||
Features: | |||
*[[Small round cell tumour]]. | |||
*Flexner-Wintersteiner [[rosette]] - '''key feature'''. | |||
**Rosette with empty centre (donut hole).<ref name=pmid16551982>{{cite journal |author=Wippold FJ, Perry A |title=Neuropathology for the neuroradiologist: rosettes and pseudorosettes |journal=AJNR Am J Neuroradiol |volume=27 |issue=3 |pages=488–92 |year=2006 |month=March |pmid=16551982 |doi= |url=}}</ref> | |||
*+/-Homer-Wright rosette.<ref>WH. 14 March 2011.</ref> | |||
**Circular rosette with neuropil at the centre.<ref name=pmid16551982>{{cite journal |author=Wippold FJ, Perry A |title=Neuropathology for the neuroradiologist: rosettes and pseudorosettes |journal=AJNR Am J Neuroradiol |volume=27 |issue=3 |pages=488–92 |year=2006 |month=March |pmid=16551982 |doi= |url=}}</ref> | |||
Image: | |||
*[http://moon.ouhsc.edu/kfung/jty1/opaq/PathQuiz/O0A001-PQ01-M.htm Retinoblastoma (ouhsc.edu)]. | |||
Notes: | |||
*DDx of Flexner-Wintersteiner rosette includes: pineoblastomas, medulloepitheliomas. | |||
=Malignant melanoma= | |||
{{Main|Malignant melanoma}} | |||
Common malignancy in the eye in adults. | |||
=See also= | =See also= | ||