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====Micro==== | ====Micro==== | ||
The sections show a polypoid fragment of skin with epithelium on three sides, acanthosis, hyperkeratosis and parakeratosis. Koilocytic changes (mild nuclear enlargement, perinuclear clearing) are seen focally. There is mild basilar nuclear enlargement and hyperchromasia. The epithelium matures to the surface and a granular layer is present. | The sections show a polypoid fragment of skin with epithelium on three sides, acanthosis, hyperkeratosis and parakeratosis. Koilocytic changes (mild nuclear enlargement, perinuclear clearing) are seen focally. There is mild basilar nuclear enlargement and hyperchromasia. The epithelium matures to the surface and a granular layer is present. | ||
=====Seborrheic keratosis-like===== | |||
The sections show skin with acanthosis with papillomatous features (round bulbous rete ridges, acanthosis with penetrating fibrovascular cores) pseudohorn cysts, parakeratosis and hyperkeratosis. There is no basal nuclear atypia, no mitoses and no melanocytic nests. There is mild dermal inflammation. There is no solar elastosis. Pigment incontinence is present focally. | |||
==Lichen sclerosus== | ==Lichen sclerosus== |
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