Choriocarcinoma associated with thyrotoxicosis: a case report.

A woman with disseminated choriocarcinoma and with clinical and biochemical evidence of thyrotoxicosis is described. Only a few cases have been previously reported, and works are referred to showing that high levels of human chorionic gonadotropin (HCG) probably are responsible for the thyroid-stimulating activity in patients with trophoblastic disease and clinical signs of thyrotoxicosis.