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

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Figure 6-143 — Feline bowenoid in situ carcinoma and invasive squamous cell carcinoma. In situ carcinoma is characterized by abrupt hyperplasia and dysplasia of the epidermis and outer root sheath (green arrows; also see inset). Squamous cell carcinoma is characterized by invasive anastomosing islands and trabeculae of neoplastic epithelial cells (black arrow) with multiple keratin pearls.