Difference between revisions of "Eye"
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m (→Retinoblastoma: +HW rossette) |
m (→Histology: +Eccrine hidrocystoma) |
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*The muscles that move the eye have a high nerve:muscle ratio = ~1:4.<ref>Bilbao. 24 November 2010.</ref> | *The muscles that move the eye have a high nerve:muscle ratio = ~1:4.<ref>Bilbao. 24 November 2010.</ref> | ||
**Other muscles in the body ~1:250. | **Other muscles in the body ~1:250. | ||
==Eccrine hidrocystoma== | |||
===General=== | |||
*Benign. | |||
*Eyelid lesion. | |||
Clinical DDx:<ref name=pmid10065300/> | |||
*Cystic [[BCC]]. | |||
===Microsopic=== | |||
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> | |||
==Retinoblastoma== | ==Retinoblastoma== | ||
Revision as of 15:06, 12 September 2011
The eye is rarely seen by pathologists. They go to neuropathologists.
An introduction to neuropathology is in the neuropathology article.
Histology
- The muscles that move the eye have a high nerve:muscle ratio = ~1:4.[1]
- Other muscles in the body ~1:250.
Eccrine hidrocystoma
General
- Benign.
- Eyelid lesion.
Clinical DDx:[2]
- Cystic BCC.
Microsopic
Features:
- Same histology as epidermal inclusion cyst.[2]
Retinoblastoma
General
- Rare.
- Malignant.
- May be familial.[3]
Microscopic
Features:
- Small round cell tumour.
- Flexner-Wintersteiner rosette - key feature.
- Rosette with empty centre (donut hole).[4]
- +/-Homer-Wright rosette.[5]
- Circular rosette with neuropil at the centre.[4]
Image:
Notes:
- DDx of Flexner-Wintersteiner rosette includes: pineoblastomas, medulloepitheliomas.
Retinal hemorrhage
Image:
See also
References
- ↑ Bilbao. 24 November 2010.
- ↑ 2.0 2.1 Adams, SP. (Feb 1999). "Dermacase. Eccrine hydrocystoma.". Can Fam Physician 45: 297, 306. PMC 2328272. PMID 10065300. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2328272/.
- ↑ Lohmann D (2010). "Retinoblastoma". Adv. Exp. Med. Biol. 685: 220–7. PMID 20687510.
- ↑ 4.0 4.1 Wippold FJ, Perry A (March 2006). "Neuropathology for the neuroradiologist: rosettes and pseudorosettes". AJNR Am J Neuroradiol 27 (3): 488–92. PMID 16551982.
- ↑ WH. 14 March 2011.
- ↑ URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/fofrm.html. Accessed on: 6 December 2010.