Solitary Metastasis of Lung Lymphoepithelial Carcinoma to Small Intestine: A Case Report

Abstract

Lung lymphoepithelial carcinoma, formerly known as lymphoepithelioma-like carcinoma, occurs rarely. A 39-yearold woman presented to our hospital with a chief complaint of dizziness and was ultimately diagnosed with anemia caused by bleeding from a solitary small intestine metastasis of primary lung lymphoepithelial carcinoma. After resection of the primary and metastatic tumors, the patient received platinum-doublet adjuvant chemotherapy and immune checkpoint inhibitors consecutively. Intestinal lung cancer metastases generally occur rarely and have a poor prognosis. There are no reports of primary lung lymphoepithelial carcinoma with solitary metastasis to the small intestine, as in this case. She has been alive without recurrence for a year. This case demonstrates the potential of multidisciplinary treatment for lung lymphoepithelial carcinoma with solitary metastasis, including resection of the metastatic site.