Pityriasis Rotunda

Abstract

ÖzetPitriyazis rotunda (PR), gövde ve ekstremitelerde yuvarlak-oval yamalarla karakterize nadir bir deri hastal›¤›d›r. ‹nce skuaml› bu yamalar genellikle çevredeki deriden daha aç›k renkli, bazen de daha koyu renktedir. Beyaz ›rkta oldukça nadir olan klinik tablo Japonlar, Güney Afrika ve Bat› Hindistan zencilerinde daha s›k gözlenmektedir. Akdeniz bölgesinde yo¤un olarak Sardunya adas›ndan olgular bildirilmifl olmakla birlikte Avrupa'da çok nadir görülmektedir. Burada ülkemizden tan› alan ilk iki olgu sunulmaktad›r. On befl yafl›nda k›z ve 4 yafl›nda erkek çocukta gövdenin tamam› ile ekstremitelerin proksimal k›s›mlar›n-da iyi s›n›rl›, dairesel, pitriyazik skuaml› merkezi hipopigmente, periferi eritematöz plaklar mevcuttu. Hastalar›n deri foto tipi II idi. Histopatolojik incelemede granüler tabaka izlenmedi sadece orta derecede kompakt hiperkeratoz mevcuttu. Yaln›z emolient kullan›lan hastalarda lezyonlarda tam silinme sa¤land›. (Türkderm 2010; 44: 99-101) Anahtar Kelimeler: Pitriyazis rotunda, iktiyozis SummaryPityriasis rotunda is a rare skin disease characterized by round or oval patches, localized mainly on the trunk, arms, and legs. The patches are usually lighter than the surrounding skin, but sometimes may be darker, and are covered by fine, adherent scales. It is very rare in caucasoids, common in Japanese and is also seen in South African blacks and West Indian black and Mediterrean area predominantly in Sardinia have been reported but it is seldom observed in Europe. We present the first two cases diagnosed from Turkey. There were well-demarcated circumscribed scaly plaques with a erythematous periphery and hypopigmented center on the trunk and proximal parts of upper limbs. Their skin phototype was III. Histopathologic examination revealed a moderate degree of compact hyperkeratosis without a granular layer. Complete clearing was observed with only emollients. (Turkderm 2010; 44: 99-101)