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Julie E. Greenberg, MD; George Elgart, MD; Edward A. Gross, MD
University of Miami, Miami, Fla

Arch Dermatol. 2002;138:1509-1514.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

REPORT OF A CASE

A 27-year-old woman presented with a lifelong history of a rash on the left palm of her hand. On the medial edge of the left hand and the left fifth finger, there was a linear patch of punctate keratotic papules (Figure 1). A punch biopsy specimen was obtained from the left hand and routinely stained with hematoxylin-eosin (Figure 2).

Figure 1.

Figure 2.

What is your diagnosis?

Diagnosis: Porokeratotic eccrine ostial and dermal duct nevus (PEODDN).

There was a narrow dell in the epidermal surface, with a pattern of cornification identical to that seen in the cornoid lamella of porokeratosis. The stratum corneum formed a column of parakeratosis from the surface of the viable epidermis. This feature was limited to an area that appeared to be overlying the acrosyringium and was contiguous with it at the level of the granular layer of the surrounding . . . [Full Text of this Article]

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