ArticleHead and neck pathology2020
SMARCB1 (INI-1)-Deficient Adenocarcinoma of the Sinonasal Tract: A Potentially Under-Recognized form of Sinonasal Adenocarcinoma with Occasional Yolk Sac Tumor-Like Features.
Article in Head and neck pathology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed, 70 citations in OpenAlex.
- Immunohistochemical characterization of somatically derived "yolk sac tumors": analysis of a multi-institutional case series.Virchows Archiv : an international journal of pathology · 2026Article
- SMARCA4-deficient carcinoma of the head and neck region: report of 8 new sinonasal and non-sinonasal cases and literature review.Virchows Archiv : an international journal of pathology · 2026Review
- Proceedings of the 2026 North American Society of Head and Neck Pathology Companion Meeting, San Antonio, TX, March 22, 2026: It's a Trap!: Diagnostic Pitfalls in Sinonasal Pathology.Head and neck pathology · 2026Review
- SMARCB1 (INI1)-deficient sinonasal carcinoma with yolk sac differentiation, a case of long-term clinical remission after multiple rounds of radiotherapy-a case report and literature review.Diagnostic pathology · 2025Review
- Reticular and Myxoid Variant of EBV-positive Nasopharyngeal Carcinoma Mimicking Salivary Gland Tumors: A Case Series.Head and neck pathology · 2025Article
- Article
- SMARCB1 (INI-1) deficient sinonasal carcinoma of the right maxillary sinus - A rare entity.International journal of surgery case reports · 2024Article
- SMARCB1-deficient sinonasal adenocarcinoma: a rare variant of SWI/SNF-deficient malignancy often misclassified as high-grade non-intestinal-type sinonasal adenocarcinoma or myoepithelial carcinoma.Virchows Archiv : an international journal of pathology · 2024Article
- Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2023Article
- Carcinoma of unknown primary (CUP): an update for histopathologists.Cancer metastasis reviews · 2023Review
- [Sinonasal neoplasms: Update from the WHO 2022].Pathologie (Heidelberg, Germany) · 2023Review
- SMARCB1-Deficient Sinonasal Carcinoma: Case Report and Review of the Literature.The American journal of case reports · 2023Review
- Top 10 Histological Mimics of Neuroendocrine Carcinoma You Should Not Miss in the Head and Neck.Head and neck pathology · 2023Review
- Top 10 Basaloid Neoplasms of the Sinonasal Tract.Head and neck pathology · 2023Review
- A Novel Successful Case of Nasal and Sinus Yolk Sac Tumor With SMARCB1 (INI-1) Deficiency: A Case Report.Cureus · 2022Article
- SMARCB1 (INI-1)-Deficient Sinonasal Carcinoma: A Systematic Review and Pooled Analysis of Treatment Outcomes.Cancers · 2022Review
- Towards a Molecular Classification of Sinonasal Carcinomas: Clinical Implications and Opportunities.Cancers · 2022Review
- Update from the 5th Edition of the World Health Organization Classification of Head and Neck Tumors: Nasal Cavity, Paranasal Sinuses and Skull Base.Head and neck pathology · 2022Review
- Proceedings of the North American Society of Head and Neck Pathology, Los Angeles, CA, March 20, 2022: SWI/SNF-deficient Sinonasal Neoplasms: An Overview.Head and neck pathology · 2022Article
- Molecular Biomarkers in Sinonasal Cancers: New Frontiers in Diagnosis and Treatment.Current oncology reports · 2022Review
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Authors and funding
10 authors at 7 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The classification of sinonasal adenocarcinoma (SNAC) is complex. The high-grade, non-intestinal SNAC group is particularly heterogeneous, with tumors showing widely variable morphology. SMARCB1 (INI-1)-deficient sinonasal carcinoma is a newly described, aggressive tumor that usually resembles sinonasal undifferentiated carcinoma (SNUC) or non-keratinizing squamous cell carcinoma; however, glandular differentiation has been rarely reported and this feature may be under-recognized. We present a dedicated series of 12 SMARCB1-deficient SNACs. All tumors had an oncocytoid/plasmacytoid cytomorphology with variable degrees of glandular differentiation consisting of tubules and cribriform structures with foci of intracellular or intraluminal mucin. Three of 12 tumors exhibited foci of yolk sac tumor-like histologic features. The tumors were uniformly high-grade, with nuclear pleomorphism, elevated mitotic rates and frequent necrosis. By immunohistochemistry, all tumors were entirely SMARCB1-deficient, and 10 of 12 were CK7-positive. Occasional expression of CDX2 (4 of 12), CK20 (3 of 12), and p40 (3 of 10) was seen. Expression of yolk sac markers was variably present in tumors that harbored yolk sac-like areas but also tumors that did not: glypican-3 (10 of 11), SALL4 (6 of 11), HepPar-1 (4 of 11), PLAP (1 of 10), and AFP (1 of 11). SMARCB1-deficient sinonasal carcinoma, particularly the oncocytoid/plasmacytoid form, can demonstrate variable degrees of glandular differentiation. This unexpected morphology combined with variable immunohistochemical results may lead to misdiagnoses of high-grade intestinal or non-intestinal SNAC, myoepithelial carcinoma, or even yolk sac tumor or metastatic hepatocellular carcinoma.
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