Thyroid metastasis of the primary lung adenocarcinoma: a case report

Metastatic diseases of thyroid are rarely seen. For the patients who had previous malignancy in their history, metastatic lesions should not be ignored in the differential diagnosis of massive lesions in the thyroid gland, even the primary tumor was treated years ago. In this article, we present a case with lung adenocarcinoma which was metastatic to the thyroid gland.