Abstract
Neuroendocrine carcinomas (NECs) are poorly differentiated neuroendocrine tumors of the upper respiratory tract. We present an extremely rare case of nasopharyngeal large cell neuroendocrine carcinoma (LCNEC) synchronized with nasopharyngeal squamous cell carcinoma (SCC). Both SCC and LCNEC are associated with Epstein-Barr virus (EBV) infection, supported by the positive result of Epstein-Barr encoding region in-situ hybridization. Strong correlation is found between EBV infection and nasopharyngeal malignancies. Furthermore, the EBV status might be a crucial prognostic factor in nasopharyngeal LCNEC. EBV-positive LCNEC is effective to chemoradiotherapy, and may have preferable outcome than EBV-negative LCNEC arising in the nasopharynx or other sites. The recognition of the EBV status is important for patients to receive appropriate treatment.
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