E-ISSN: 1308-5255 ISSN: 1307-7635
Hyperkeratotic Porokeratosis of Mibelli: A Rare Variant
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Case Report
VOLUME: 3 ISSUE: 1
P: 13-15
March 2009

Hyperkeratotic Porokeratosis of Mibelli: A Rare Variant

Turk J Dermatol 2009;3(1):13-15
Berna Aksoy 1
Hüseyin Üstün 2
Mahi Balcı 3
Hasan Mete Aksoy 4
1. Tdv 29 Mayis Özel Ankara Hastanesi, Dermatoloji Klinigi, Ankara, Türkiye
2. Ankara Egitim Ve Arastirma Hastanesi, Patoloji Klinigi, Ankara, Türkiye
3. Özel Tdv 29 Mayis Hastanesi, Patoloji Klinigi, Ankara, Türkiye
4. Tdv 29 Mayis Hastanesi Plastik Ve Rekonstrüktif Cerrahi Klinigi, Ankara, Türkiye
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ABSTRACT

Porokeratosis is a rare, premalignant keratinization disorder of the skin that is characterized by annular plaques with elevated and hyperkeratotic border and spreads centrifugally. The histopathologic characteristic of porokeratosis is the presence of cornoid lamella.

A 47-year-old male patient applied with a complaint of feet pruritus present for 20 years. On dermatologic examination there were fleshy, thick, hyperkeratotic plaques located on dorsal side of the left foot. Histopathologic examination of biopsy specimen taken from the left dorsal foot revealed deep invagination of epidermis into dermis.

In this area lamellar keratinous material (cornoid lamella) was observed. In the underlying dermis there was lymphocytic infiltration.The patient was diagnosed to have hyperkeratotic porokeratosis of Mibelli by the help of these histopathologic findings. We have decided to present this case because this condition is rare and could be confused with some other dermatological disorders easily.