Porokeratosis

From dermoscopedia

0.00
(0 votes)

 Editor: Aimilios Lallas

Annotations
Description This chapter describes the dermoscopy of porokeratosis
Author(s) Sabine Ludwig · Aimilios Lallas
Responsible author Aimilios Lallas→ send e-mail
Status unknown
Status update July 11, 2017
Status by Ralph P. Braun




Porokeratosis

In porokeratosis, the cornoid lamella, known as the histopathologic hallmark of porokeratosis, is revealed by dermoscopic examination as a well-defined, white-yellowish peripheral annular structure (“white track”, ‘‘the outlines of a volcanic crater as observed from a high point’’).[1][2][3][4]

In disseminated superficial actinic porokeratosis, the peripheral track may be hyperpigmented.[5][6][7] Depending on the disease subtype and the stage of progression, the central part of porokeratotic lesions can demonstrate a brownish pigmentation, dotted or linear vessels, or a structureless whitish area. By dermoscopy, the diagnosis of porokeratosis is performed without difficulty, even in clinically atypical cases.



References

  1. Delfino et al.: Dermoscopy for the diagnosis of porokeratosis. J Eur Acad Dermatol Venereol 2004;18:194-5. PMID: 15009303.
  2. Zaballos et al.: Dermoscopy of disseminated superficial actinic porokeratosis. Arch Dermatol 2004;140:1410. PMID: 15545557. DOI.
  3. Pizzichetta et al.: Clinical and dermoscopic features of porokeratosis of Mibelli. Arch Dermatol 2009;145:91-2. PMID: 19153357. DOI.
  4. Uhara et al.: Open pores with plugs in porokeratosis clearly visualized with the dermoscopic furrow ink test: report of 3 cases. Arch Dermatol 2011;147:866-8. PMID: 21768494. DOI.
  5. Zaballos et al.: Dermoscopy of disseminated superficial actinic porokeratosis. Arch Dermatol 2004;140:1410. PMID: 15545557. DOI.
  6. Oiso & Kawada: Dermoscopic features in disseminated superficial actinic porokeratosis. Eur J Dermatol 2011;21:439-40. PMID: 21680280. DOI.
  7. Panasiti et al.: Disseminated superficial actinic porokeratosis diagnosed by dermoscopy. Int. J. Dermatol. 2008;47:308-10. PMID: 18289344. DOI.