SMARCA4-deficient sinonasal carcinoma
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SMARCA4-deficient sinonasal carcinoma is an emerging type of sinonasal carcinoma.[1]
Microscopic
Features:
- Poorly differentiated tumour with large or small cells.
DDx:[2]
- Sinonasal undifferentiated carcinoma (SNUC).
- Neuroendocrine carcinoma - small cell carcinoma and large cell neuroendocrine carcinoma.
- Teratocarcinosarcoma.
IHC
Features:[1]
- SMARCA4 loss of staining - definitional.
- CK5 -ve.
- p63 -ve.
- p16 -ve.
- NUT -ve.
See also
- Head and neck pathology.
- SMARCA4.
- SMARCB1 (INI-1).
References
- ↑ 1.0 1.1 "SMARCA4-deficient Sinonasal Carcinoma: A Series of 10 Cases Expanding the Genetic Spectrum of SWI/SNF-driven Sinonasal Malignancies". Am J Surg Pathol 44 (5): 703–710. May 2020. doi:10.1097/PAS.0000000000001428. PMID 31934917.
- ↑ Kakkar A, Ashraf SF, Rathor A, Adhya AK, Mani S, Sikka K, Jain D (September 2022). "SMARCA4/BRG1-Deficient Sinonasal Carcinoma". Arch Pathol Lab Med 146 (9): 1122–1130. doi:10.5858/arpa.2021-0001-OA. PMID 34871352.