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Epidermal hyperplasia, sometimes with primitive hair follicle-like differentiation, is a characteristic finding overlying dermatofibroma. We here report plate-like sebaceous hyperplasia overlying a dermatofibroma. Such changes are interpreted as a result of inductive epithelial effect by the dermatofibroma on the overlying epidermis.
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Requena et al. (1992) studied this question.
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