Sarcoidosis and testicular neoplasm: an unusual association

A case of sarcoidosis of the mediastinal lymph nodes with concomitant teratoembryonal carcinoma of the testis is presented. It is important to differentiate these entities from mediastinal metastases of testicular tumors and testicular sarcoidosis, respectively. We favor mediastinal biopsy in appropriate cases, in addition to testicular exploration.