Indian Journal of Dermatology, Venereology, and Leprology | November-December 2012 | Vol 78 | Issue 6 760 A pruritic variant of porokeratosis. J Dermatol 2006;33:813-6. 4. Choi KH, Kim TY. A case of inflammatory disseminated superficial porokeratosis in a colon cancer patient. Ann Dermatol 2009;21:150-3. 5. Stork J, Kodetová D. Disseminated superficial porokeratosis: An eruptive pruritic papula...

Porokeratosis is a specific disorder of keratinization that has five clinical types and shows a characteristic 'cornoid lamella' on histopathology. Malignant degeneration has been described in all forms of porokeratosis. To the best of our knowledge, this is the first Indian report of multicentric squamous cell carcinoma complicating porokeratosis.

Porokeratosis of Mibelli is a disorder of epidermal proliferation in which many different clinical forms can be distinguished. Two male patients with a localized type of porokeratosis limited to the genitalia are reported. Later in life they developed an annular skin lesion with peripheral keratotic ridge. The histological examination of a biopsy specimen showed the characteristic features of p...

Observations: Porokeratosis is a dyskeratotic disorder of the skin characterized by hyperkeratotic papule or plaque with an annular appearance and usually diagnosed easily, both histopathologically and clinically. We present a case of linear porokeratosis which was most likely suggesting the linear epidermal nevus and linear lichen planus. We observed a tiny brown border in the dermoscopic exam...

Porokeratosis is a rare epidermal disorder characterized by annular or linear hyperkeratotic plaques with slightly raised thread-like borders, and in most cases, atrophic centers. Disseminated superficial porokeratosis and disseminated superficial actinic porokeratosis (DSAP), which primarily involve sun-exposed areas, are common types of porokeratoses. Histologically, a column of parakeratotic...

More than a century ago, two Italian dermatologists independently described a new keratotic disorder [1,2] which was called porokeratosis by Mibelli [1]. After these first descriptions, at least four variants of porokeratosis have been recognized. Clinically all these dermatological disorders are characterized by diffuse annular lesions surrounded by a raised, sharply marginated, keratotic bord...

Porokeratosis refers to a group of hereditary or acquired disorders of epidermal keratinization and is characterized histologically by the presence of a cornoid lamella. The clinical variant referred to as disseminated superficial porokeratosis has been described in the literature in association with immunosuppressive conditions that include organ transplant, infections and immunosuppressive tr...

Porokeratosis represents a spectrum of clinical diseases. Multiple variants have been described including porokeratosis ptychotropica, a rare subtype. The coexistence of two or more variants of porokeratosis in a single patient is regarded as a rare occurrence. Here we report a patient with porokeratosis ptychotropica with coexistent porokeratosis of Mibelli. The patient was a 47-year-old man w...

Porokeratosis is the common name of several diseases of unknown pathogenesis, which are similar in clinical appearance. It was first described in 1893 and was thought to be a disorder of sweat glands, hence the name porokeratosis. The lesion that can be found in all cases is annular, with atrophic center, and hyperkeratotic outer ring. Cases of porokeratosis have been linked with genetic herita...

Porokeratoses are a group of hereditary or acquired disorders characterized by annular lesions with an atrophic center and a prominent peripheral ridge. Pathologically, porokeratosis is characterized by the presence of abnormal clones of keratinocytes that form a column of parakeratotic cells, called the cornoid lamella. Fifteen percent of patients of disseminated superficial actinic porokerato...