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Figure 3: (a) Trichoepithelioma. Note the basophilic cells in which are imbedded collagenous structures resembling immature hair papillae. These changes are diagnostic of this entity (H and E, ×100). (b) Trichoepithelioma combined with hair follicle lining epithelium, producing a cyst-like structure (H and E, ×80). (c) Trichoepithelioma combined with hair follicle lining epithelium, producing a papillary structure with diagnostic changes of trichoepithelioma projecting into a cyst-like structure composed of hair follicular epithelium (H and E, ×60)

Figure 3: (a) Trichoepithelioma. Note the basophilic cells in which are imbedded collagenous structures resembling immature hair papillae. These changes are diagnostic of this entity (H and E, ×100). (b) Trichoepithelioma combined with hair follicle lining epithelium, producing a cyst-like structure (H and E, ×80). (c) Trichoepithelioma combined with hair follicle lining epithelium, producing a papillary structure with diagnostic changes of trichoepithelioma projecting into a cyst-like structure composed of hair follicular epithelium (H and E, ×60)