Difference between revisions of "Pseudoepitheliomatous hyperplasia"

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==Microscopic==
==Microscopic==
Features:<ref>{{Cite journal  | last1 = Cui | first1 = W. | last2 = McGregor | first2 = DH. | last3 = Stark | first3 = SP. | last4 = Ulusarac | first4 = O. | last5 = Mathur | first5 = SC. | title = Pseudoepitheliomatous hyperplasia - an unusual reaction following tattoo: report of a case and review of the literature. | journal = Int J Dermatol | volume = 46 | issue = 7 | pages = 743-5 | month = Jul | year = 2007 | doi = 10.1111/j.1365-4632.2007.03150.x | PMID = 17614808 }}</ref>
Features:<ref name=pmid17614808>{{Cite journal  | last1 = Cui | first1 = W. | last2 = McGregor | first2 = DH. | last3 = Stark | first3 = SP. | last4 = Ulusarac | first4 = O. | last5 = Mathur | first5 = SC. | title = Pseudoepitheliomatous hyperplasia - an unusual reaction following tattoo: report of a case and review of the literature. | journal = Int J Dermatol | volume = 46 | issue = 7 | pages = 743-5 | month = Jul | year = 2007 | doi = 10.1111/j.1365-4632.2007.03150.x | PMID = 17614808 }}</ref>
*Epidermal thickening - irregular (acanthosis).<ref name=pmid21399447>{{Cite journal  | last1 = Zayour | first1 = M. | last2 = Lazova | first2 = R. | title = Pseudoepitheliomatous hyperplasia: a review. | journal = Am J Dermatopathol | volume = 33 | issue = 2 | pages = 112-22; quiz 123-6 | month = Apr | year = 2011 | doi = 10.1097/DAD.0b013e3181fcfb47 | PMID = 21399447 }}</ref>
*Acanthosis (epidermal thickening) - irregular .<ref name=pmid21399447>{{Cite journal  | last1 = Zayour | first1 = M. | last2 = Lazova | first2 = R. | title = Pseudoepitheliomatous hyperplasia: a review. | journal = Am J Dermatopathol | volume = 33 | issue = 2 | pages = 112-22; quiz 123-6 | month = Apr | year = 2011 | doi = 10.1097/DAD.0b013e3181fcfb47 | PMID = 21399447 }}</ref>
**Involves both follicles and and non-follicular epidermis.
**Involves both follicles and and non-follicular epidermis.
*Hyperkeratosis - thickening of the stratum corneum.
*Hyperkeratosis - thickening of the stratum corneum.

Revision as of 19:25, 10 November 2012

Pseudoepitheliomatous hyperplasia is mimic of squamous cell carcinoma.

It is seen in:

  1. Fungal infections.
  2. Inflammatory papillary hyperplasia.
  3. Granular cell tumour.
  4. Adjacent to an ulcer.

Microscopic

Features:[1]

  • Acanthosis (epidermal thickening) - irregular .[2]
    • Involves both follicles and and non-follicular epidermis.
  • Hyperkeratosis - thickening of the stratum corneum.
  • Parakeratosis - nuclei in the stratum corneum.

Images:

References

  1. ↑ Cui, W.; McGregor, DH.; Stark, SP.; Ulusarac, O.; Mathur, SC. (Jul 2007). "Pseudoepitheliomatous hyperplasia - an unusual reaction following tattoo: report of a case and review of the literature.". Int J Dermatol 46 (7): 743-5. doi:10.1111/j.1365-4632.2007.03150.x. PMID 17614808.
  2. ↑ Zayour, M.; Lazova, R. (Apr 2011). "Pseudoepitheliomatous hyperplasia: a review.". Am J Dermatopathol 33 (2): 112-22; quiz 123-6. doi:10.1097/DAD.0b013e3181fcfb47. PMID 21399447.
  3. ↑ URL: http://www.pathologyoutlines.com/topic/penscrotumpenssqhyper.html. Accessed on: 10 November 2012.
  4. ↑ URL: http://www.the-dermatologist.com/content/treating-rare-fungal-infections-coccidioidomycosis. Accessed on: 10 November 2012.
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