Cases reported "Porokeratosis"

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1/2. Systematized porokeratotic eccrine and hair follicle naevus: report of a case and review of the literature.

    We report a unique case of a congenital keratinocytic naevus associated with severe alopecia, onychodysplasia and palmoplantar involvement in a 13-year-old girl. The lesions, consisting of scaly, spinous and verrucous papules and plaques, mainly followed Blaschko's lines and have remained unchanged since birth. The predominant histopathological picture was that of a column of parakeratosis overlying the eccrine ostia and hair follicles. This is the first case of a systematized keratinocytic naevus characterized by histopathology of eccrine and hair follicle porokeratosis and a widespread bilateral involvement. This may be a distinct entity to be included in the differential diagnosis of linear, hyperkeratotic dermatoses. We suggest its classification as systematized porokeratotic eccrine and hair follicle naevus.
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keywords = naevus
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2/2. A case of porokeratotic eccrine ostial and dermal duct naevus of late onset.

    We describe the case of a 21-year-old man with an 8-year history of porokeratotic eccrine ostial and dermal duct naevus (PEODDN) of late onset. The patient had pruritic, keratotic papules on the dorsal surface of his left hand, bilaterally on his palms and multiple yellowish lesions on the plantar surface of his feet. On histopathological examination cornoid lamella-like parakeratotic columns above eccrine sweat ducts were observed. The acrosyringium was also dilated. The lesions were refractory to treatment with salicylic acid in petrolatum and acitretin for 2 months. This entity should be taken into consideration in the differential diagnosis of linear keratotic cutaneous eruptions.
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ranking = 0.71428571428571
keywords = naevus
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