1. Wade TR, Ackerman AB. Cornoid lamellation. A histologic reaction pattern. Am J Dermatopathol 1980; 2: 5 ± 15. 2. Schamroth JM, Zlotogorski A, Gilead L. Porokeratosis of MibelliÐoverview and review of the literature. Acta Derm Venerol 1997; 77: 207 ± 213. 3. Fields LL, White CR Jr, Maziarz RT. Rapid development of disseminated super®cial porokeratosis after transplant induction therapy. Bone ...

It is reported on a 72-year-old pensionary who developed one year ago a disseminated superficial actinic porokeratosis on the lower legs after chronic sun exposure during twenty summers. The diagnostic features and therapeutic schedules are summarized and the role as praecancerosis is emphasized.

Disseminated superficial actinic porokeratosis (DSAP) consists of multiple annular, hyperkeratotic lesions that have a bilateral distribution on sun-exposed areas, particularly the extremities. DSAPs have a wider distribution than porokeratosis of Mibelli and usually develop during the 3rd or 4th decade of life. Squamous cell carcinoma that arises in the classical type of porokeratosis of Mibel...

Porokeratosis is a skin disorder clinically characterized by annular plaques with keratotic borders resembling the Great Wall of China and histopathologically by cornoid lamellae. The disease has several clinical variants. Porokeratosis ptychotropica, which has recently become part of these variants, is quite rare and little known. The entity is characterized by verrucous plaques - which may re...

Porokeratosis is a disorder of epidermal keratinization characterized by annular plaques with an atrophic center and hyperkeratotic edges, and includes a heterogeneous group of disorders that are mostly inherited in an autosomal dominant form. This report describes a 5 year-old female patient, with porokeratosis of Mibelli confirmed histopathologically. The rarity of this disorder, its clinical...

508 Ann Dermatol Received January 12, 2016, Revised July 8, 2016, Accepted for publication August 13, 2016 Corresponding author: Yoshihiro Tokudome, Laboratory of Dermatological Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan. Tel: 81-49-271-8140, Fax: 81-49-271-8140, E-mail: tokudome@ josai.ac.jp This is an Open Access article di...

© 2010 The Authors. doi: 10.2340/00015555-0800 Journal Compilation © 2010 Acta Dermato-Venereologica. ISSN 0001-5555 Sir, Porokeratosis (PK) is a heterogeneous group of hereditary or acquired disorders of keratinization with a broad clinical spectrum and various aetiologies. Common to all PK is the typical histological feature of a cornoid lamella, which corresponds to the hyperkeratotic rim of...

Disseminated superficial actinic porokeratosis is a rare photodistributed disorder that has occasionally been reported in association with psoriasis. Treatment of psoriasis with phototherapy may trigger the onset of porokeratosis in some cases. In other cases, the coexistence of these disorders may be coincidental. Clinical inspection of lesions of coexisting porokeratosis and psoriasis reveals...

A 15-year-old girl underwent allogenic bone marrow transplantation for neuroblastoma. few years later, she noticed a round lesion on her left buttock. Since the had been asymptomatic and never grown, more than 20 passed before saw local doctor to consult about it. Although was suspected be tinea corporis, no fungi were found microscopic examination. Subsequently, administered topical corticoste...

Sir, Disseminated porokeratosis palmaris and plantaris (DPPP), a subtype of porokeratosis Mibelli, is a rare autosomal dominant genodermatosis first described by Guss et al. in 1971 (1). An early review of the literature showed that 7% of 250 patients with porokeratosis subsequently developed skin tumours (2). Squamous cell carcinomas (SCC), Bowen’s disease (BD), and rarely, basal cell carcinom...