[A rare carcinoma metastasizing to the lung: Sertoli-leydig cell tumor]

The lung is the most common site of metastasis for many malignancies. Especially the gastrointestinal system, gynecological malignancies and osteosarcomas frequently metastasize to the lung. It accounts for less than 0.5% of all ovarian neoplasms. The frequency of recurrence and metastasis is less than 5%. In most cases, they are stage I tumors, limited to the ovary and carry a good prognosis. Here, while investigating the nodules in the lung that were detected incidentally at the age of 64, the rare Sertoli-Leydig cell tumor of the lung is discussed clinically, radiologically and pathologically in the presence of a 64-year-old patient who was found to have undergone ovarian surgery 9 years ago. Since imaging methods and tumor markers did not yield significant results in terms of primary malignancy, wedge resection was performed from the left lung nodules. The histology of the lung nodule was the same as the poorly differentiated foci of the ovarian tumor. The immunohistochemical profiles of the two tumors were also similar. As a result of the evaluation of the patient's old materials belonging to the ovary and the samples taken from the lung together; The diagnosis was reached by obtaining similar results with the primary tumor in the immunohistochemical examination performed for the metastatic focus. Sex cord stromal tumors of the ovary, which rarely cause lung metastasis and have a tendency to recur and metastasis in a very long time after the first diagnosis, should also be kept in mind in the elderly woman and the patient with a gynecological history.