An epithelioid trophoblastic tumor (ETT) is a form of gestational trophoblastic neoplasms
that arise from trophoblasts. The tumor generally occurs in women of reproductive
age and has a characteristic growth pattern and immunohistochemical profile. We present
an extremely rare case of a primary ETT occurring in the lungs with an adenocarcinoma
in the contralateral lung as synchronous double primary lung cancers in a 69-year-old
man who had no history of a remote malignancy. He underwent adjuvant radiotherapy
to both lungs after a staged thoracoscopic wedge resection and was doing well without
recurrence or metastasis up to last follow-up.
Keywords
histology - lung cancer treatment - epithelioid trophoblastic tumor - adenocarcinoma
