Porokeratotic eccrine ostial and dermal duct nevus.

A 6-year-old girl with congenital porokeratotic eccrine ostial and dermal duct nevus involving the palmoplantar surfaces (ie, the back of the hands and feet), the limbs, the neck, and the axillae is described. The clinical and histopathologic findings are presented. This entity should be taken into consideration in the differential diagnosis of linear keratotic cutaneous eruptions.

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