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. 2015 Nov 20:509–736.e1. doi: 10.1016/B978-0-7020-5317-7.00006-0

Figure 6-147.

Figure 6-147

Figure 6-147

Trichoepithelioma. A. Well-demarcated dermal mass composed of numerous small cystic epithelial structures with a fibromyxoid stroma. B. Note the abrupt keratinization and differentiation toward the isthmus (black arrow) and inferior segment (green arrow) of the follicle.