Spontaneous Regression of Pulmonary Lymphoepithelioma-Like Carcinoma.

Kawaguchi, Yo; Fujita, Takuya; Hanaoka, Jun · Ann Thorac Surg · 2015

case_report · Level V

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Abstract

The spontaneous regression of lung cancer is extremely rare. We encountered a case of a 70-year-old man with pulmonary lymphoepithelioma-like carcinoma that regressed without receiving anticancer therapy. The patient had depression during tumor regression, however, and was treated with a serotonin-selective reuptake inhibitor. On histologic examination, CD3(+), CD4(+), and CD8(+) lymphocytes were found to have infiltrated around the tumor. Thus, the serotonin-selective reuptake inhibitor may have activated these lymphocytes to cause spontaneous tumor regression.

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