Malignant teratoma presenting with an adrenal mass.

A case of extragonadal teratoma presenting with a large adrenal mass and lung metastases is reported. There was no history or physical sign of testicular abnormality, and serum levels of the tumour markers alphafoetoprotein and human chorionic gonadotrophin were normal. The histological diagnosis was established by adrenalectomy. It is important to consider this tumour in young men with malignancy from an unknown primary, since effective chemotherapy is available.