Is the so-called epidermal collarette formed by epidermal or adnexal epithelium?

Abstract
The term epidermal collarette has been used to describe the infoldings of epithelium frequently seen around or embracing pyogenic granulomas and verrucae. In this paper, collarettes are demonstrated in a variety of lesions, and are shown to be formed by epithelial adnexa and not of the epidermis. A theory about the collarette as a formation of adnexal epithelium is proposed.

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