Difference between revisions of "Eye"

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(+pinguecula +images)
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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.


Image:
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]

Microsopic

Features:

Retinoblastoma

General

  • Rare.
  • Malignant.
  • May be familial.[7]

Microscopic

Features:

Image:

Notes:

  • DDx of Flexner-Wintersteiner rosette includes: pineoblastomas, medulloepitheliomas.

Retinal hemorrhage

See Traumatic brain injury in infants.

Image:

See also

References

  1. Bilbao. 24 November 2010.
  2. URL: http://www.lab.anhb.uwa.edu.au/mb140/corepages/eye/eye.htm. Accessed on: 20 October 2011.
  3. Raizada, IN.; Bhatnagar, NK. (Jul 1976). "Pinguecula and pterygium (a histopathological study).". Indian J Ophthalmol 24 (2): 16-8. PMID 1031388.
  4. URL: http://dictionary.reference.com/browse/pterygium. Accessed on: 20 October 2011
  5. URL: http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002006/. Accessed on: 20 October 2011.
  6. 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/.
  7. Lohmann D (2010). "Retinoblastoma". Adv. Exp. Med. Biol. 685: 220–7. PMID 20687510.
  8. 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.
  9. WH. 14 March 2011.
  10. URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/fofrm.html. Accessed on: 6 December 2010.