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. 2022 Mar 21;16(1):168–178. doi: 10.1007/s12105-022-01416-x

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Representative examples of sinonasal teratocarcinosarcoma. A disordered admixture of mucinous glands, cohesive larger basaloid cell aggregates and primitive neuroectodermal-like stroma. B clear cell fetal-type tubules embedded within cellular primitive stroma. C clear cell fetal-type squamous islands (mid upper field) and scattered neuroepithelial rosettes (right) surrounded by highly cellular primitive stroma. D cellular spindled sarcomatoid stroma with numerous rhabdomyoblasts. E SMARCA4 loss is observed in stroma and in the glands. F mature-looking bland paucicellular stroma also shows SMARCA4 loss indicating it is neoplastic