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. 2023 May 15;17(2):299–312. doi: 10.1007/s12105-023-01548-8

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© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 5 — Olfactory carcinoma generally shows strong positivity for low molecular weight keratin Cam 5.2 (A, × 20) with variable expression of pankeratin AE1/AE3 that is stronger in glands than neuroectodermal cells (B, × 20). The neuroectodermal cells also display variable expression of neuroendocrine markers including INSM1 (C, × 20) and synaptophysin (D, × 20). A subset of cases show peripheral p40 expression in the neuroectodermal cells (E, × 20) and S100-protein-positive sustentacular cells (F, × 20)