Abstract
Sarcomatoid or spindle cell carcinomas are rare malignancies which are considered as a poorly differentiated variant of squamous cell carcinoma. Epstein-Barr virus (EBV) is associated with a wide variety of malignancies. We examined the expression of EBV latent membrane protein-1 (LMP-1) and EBV EBNA-2 as well as the immunohistochemical profile of AE-1/AE-3, vimentin, desmin, CK 5-6, smooth muscle actin (SMA), p63, S-100, p53 and CD-117 with the clinicopathological correlation of eight patients of sarcomatoid carcinoma (SC) in the upper aerodigestive tract. Four cases showed EBV LMP-1 positivity (50%) and there was no EBV EBNA-2 positivity. However, the EBV LMP-1 results of our series could be considered only as a coincidental finding in the SCs of the upper aerodigestive tract. This finding supports the idea that further studies based on larger series might be helpful enlighting the role played by EBV in carcinogenesis of SC.
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