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

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Abstract

Rationale:

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.

Diagnoses:

Two patients was diagnosed with advanced pulmonary LELC.

Interventions:

The patients were treated with chemotherapy and chemoradiotherapy respectively.

Outcomes:

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

Lessons:

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

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