8/8/2019 Seborrheic Keratosis, Clonal Type.

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Seborrheic keratosis, clonal typeDeba P Sarma, MD

Omaha

8/8/2019 Seborrheic Keratosis, Clonal Type.

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The hallmark of the clonal (nested) seborrheic keratosis subtype is the

proliferation of sharply demarcated intraepithelial nests of basaloid or

pale cells (Borst-Jadassohn phenomenon).

8/8/2019 Seborrheic Keratosis, Clonal Type.

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The hallmark of the clonal (nested) seborrheic keratosis subtype

is the proliferation of sharply demarcated intraepithelial nests of

basaloid or pale cells (Borst-Jadassohn phenomenon).