Difference between revisions of "Eye"

From Libre Pathology
Jump to navigation Jump to search
m (→‎Histology: +Eccrine hidrocystoma)
(+Pterygium)
Line 6: Line 6:
*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.
Conjunctiva:<ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/corepages/eye/eye.htm http://www.lab.anhb.uwa.edu.au/mb140/corepages/eye/eye.htm]. Accessed on: 20 October 2011.</ref>
*Stratified squamous.
**May be stratified columnar
*Goblet cells.
==Pterygium==
===General===
*Scleral lesion
**Sclera = white part of the eye.<ref>URL: [http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002006/ http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002006/]. Accessed on: 20 October 2011.</ref>
*Benign.
*Assoc. with sun exposure.
Image:
*[http://trialx.com/curebyte/2011/05/31/what-does-pterygium-look-like/ Pterygium - gross (trialx.com)].
===Microscopic===
Features:
*Dilated vessels.
*Solar elastosis.
**Dense gray/light brown acellular material.
Image:
*[http://www.uic.edu/depts/mcpt/eyepath/specco4.htm Pterygium (uic.edu)].


==Eccrine hidrocystoma==
==Eccrine hidrocystoma==

Revision as of 19:18, 20 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.

Pterygium

General

  • Scleral lesion
    • Sclera = white part of the eye.[3]
  • Benign.
  • Assoc. with sun exposure.

Image:

Microscopic

Features:

  • Dilated vessels.
  • Solar elastosis.
    • Dense gray/light brown acellular material.

Image:

Eccrine hidrocystoma

General

  • Benign.
  • Eyelid lesion.

Clinical DDx:[4]

Microsopic

Features:

Retinoblastoma

General

  • Rare.
  • Malignant.
  • May be familial.[5]

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. URL: http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002006/. Accessed on: 20 October 2011.
  4. 4.0 4.1 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/.
  5. Lohmann D (2010). "Retinoblastoma". Adv. Exp. Med. Biol. 685: 220–7. PMID 20687510.
  6. 6.0 6.1 Wippold FJ, Perry A (March 2006). "Neuropathology for the neuroradiologist: rosettes and pseudorosettes". AJNR Am J Neuroradiol 27 (3): 488–92. PMID 16551982.
  7. WH. 14 March 2011.
  8. URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/fofrm.html. Accessed on: 6 December 2010.