Primary pulmonary lymphoepithelioma-like carcinoma in non-endemic region: A case report and literature review

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Pulmonary lymphoepithelioma-like carcinoma (LELC) is a rare type of lung squamous cell carcinoma. In situ hybridization test for Epstein–Bar virus-encoded RNA (EBER) is generally used for distinguishing it from other lung cancers. Although plasma EBV DNA quantification has been widely used as a tumor biomarker in nasopharyngeal carcinoma (NPC), only a limiting number of studies have suggested that plasma EBV DNA quantification may be used as a tumor marker in pulmonary LELC patients.

Patient concerns:

We report two female patients diagnosed as poorly differentiated squamous cell carcinoma, subsequently, their further histological examinations showed that tumor cells were EBER positive and plasma EBV DNA was detectable.


Two patients was diagnosed with advanced pulmonary LELC.


The patients were treated with chemotherapy and chemoradiotherapy respectively.


Both patients responded well to our treatment, in accordance with their decreased EBV DNA level.


Pulmonary LELC is a rare type of lung cancer which is sensitive to chemoradiotherapy, especially in late staged patients.

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