Abstract

The thymus is a primary lymphoid organ located in the superior and anterior mediastinum. Thymic tumors constitute almost all anterior mediastinal tumors. Although thymomas are the most common tumors of the thymus in adults, metastasis of a tumor to the thymus is extremely rare. The diagnosis of space-occupying formations in the thymus is often made by clinical and radiological findings. It is confirmed by histopathological examination. In this article, a case of breast cancer with solitary thymus metastasis observed in the 9th year after mastectomy is presented.