Difference between revisions of "Eye"
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**May be stratified columnar | **May be stratified columnar | ||
*Goblet cells. | *Goblet cells. | ||
==Pinguecula== | |||
===General=== | |||
*Raizada ''et al.''<ref name=pmid1031388>{{Cite journal | last1 = Raizada | first1 = IN. | last2 = Bhatnagar | first2 = NK. | title = Pinguecula and pterygium (a histopathological study). | journal = Indian J Ophthalmol | volume = 24 | issue = 2 | pages = 16-8 | month = Jul | year = 1976 | doi = | PMID = 1031388 | URL = http://www.ijo.in/text.asp?2007/55/1/83/29517 }}</ref> suggest it is an early pterygium; however, this is disputed. | |||
===Gross=== | |||
*Yellow spot. | |||
===Microscopic=== | |||
Features: | |||
* ??? | |||
==Pterygium== | ==Pterygium== | ||
| Line 33: | Line 44: | ||
*Squamous dysplasia. | *Squamous dysplasia. | ||
Images: | |||
*[http://www.uic.edu/depts/mcpt/eyepath/specco4.htm Pterygium (uic.edu)]. | *www: | ||
**[http://www.uic.edu/depts/mcpt/eyepath/specco4.htm Pterygium (uic.edu)]. | |||
*[[WC]]: | |||
**[http://commons.wikimedia.org/wiki/File:Pterygium_-_intermed_mag.jpg Pterygium - intermed. mag. (WC)]. | |||
**[http://commons.wikimedia.org/wiki/File:Pterygium_-_high_mag.jpg Pterygium - high mag. (WC)]. | |||
==Eccrine hidrocystoma== | ==Eccrine hidrocystoma== | ||
Revision as of 02:39, 26 October 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.
Conjunctiva:[2]
- Stratified squamous.
- May be stratified columnar
- Goblet cells.
Pinguecula
General
- Raizada et al.[3] suggest it is an early pterygium; however, this is disputed.
Gross
- Yellow spot.
Microscopic
Features:
- ???
Pterygium
- AKA surfer eye.
General
- Pronounced: "tuh-rij-ee-uhm".[4]
- Conjunctiva lesion that covers part of the sclera.
- Sclera = white part of the eye.[5]
- Benign.
- Assoc. with sun exposure.
Image:
Microscopic
Features:
- Dilated vessels.
- Solar elastosis.
- Dense gray/light brown acellular material.
DDx:
- Squamous dysplasia.
Images:
Eccrine hidrocystoma
General
- Benign.
- Eyelid lesion.
Clinical DDx:[6]
- Cystic BCC.
Microsopic
Features:
- Same histology as epidermal inclusion cyst.[6]
Retinoblastoma
General
- Rare.
- Malignant.
- May be familial.[7]
Microscopic
Features:
- Small round cell tumour.
- Flexner-Wintersteiner rosette - key feature.
- Rosette with empty centre (donut hole).[8]
- +/-Homer-Wright rosette.[9]
- Circular rosette with neuropil at the centre.[8]
Image:
Notes:
- DDx of Flexner-Wintersteiner rosette includes: pineoblastomas, medulloepitheliomas.
Retinal hemorrhage
Image:
See also
References
- ↑ Bilbao. 24 November 2010.
- ↑ URL: http://www.lab.anhb.uwa.edu.au/mb140/corepages/eye/eye.htm. Accessed on: 20 October 2011.
- ↑ Raizada, IN.; Bhatnagar, NK. (Jul 1976). "Pinguecula and pterygium (a histopathological study).". Indian J Ophthalmol 24 (2): 16-8. PMID 1031388.
- ↑ URL: http://dictionary.reference.com/browse/pterygium. Accessed on: 20 October 2011
- ↑ URL: http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002006/. Accessed on: 20 October 2011.
- ↑ 6.0 6.1 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.
- ↑ 8.0 8.1 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.