Pseudoepitheliomatous hyperplasia
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Pseudoepitheliomatous hyperplasia is mimic of squamous cell carcinoma.
It is seen in:
- Fungal infections.
- Inflammatory papillary hyperplasia.
- Granular cell tumour.
- Adjacent to an ulcer.
Microscopic
Features:[1]
- Epidermal thickening - irregular (acanthosis).[2]
- Involves both follicles and and non-follicular epidermis.
- Hyperkeratosis - thickening of the stratum corneum.
- Parakeratosis - nuclei in the stratum corneum.
Images:
- Pseudoepitheliomatous hyperplasia (pathologyoutlines.com).[3]
- Pseudoepitheliomatous hyperplasia (the-dermatologist.com).[4]
References
- ↑ 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.
- ↑ 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.
- ↑ URL: http://www.pathologyoutlines.com/topic/penscrotumpenssqhyper.html. Accessed on: 10 November 2012.
- ↑ URL: http://www.the-dermatologist.com/content/treating-rare-fungal-infections-coccidioidomycosis. Accessed on: 10 November 2012.