Successful Treatment with Carboplatin and Pemetrexed for Multiple Lymph Node Metastases of Lymphoepithelioma-like Carcinoma from an Unknown Primary Site

We herein report the case of an 80-year-old Japanese man with multiple lymph node metastases of lymphoepithelioma-like carcinoma (LELC) from an unknown primary site. The patient was admitted to our hospital due to hoarseness and left supraclavicular lymphadenopathy. Contrast-enhanced whole-body computed tomography revealed mediastinal, left supraclavicular, and left axillary lymphadenopathy. A left supraclavicular lymph node biopsy was performed and the specimen was consequently diagnosed as exhibting LELC. The patient's Eastern Cooperative Oncology Group performance status was 0, therefore he was started on chemotherapy with carboplatin and pemetrexed. His lymph nodes responded well to four cycles of chemotherapy without any intolerable adverse effect.