Histologically Benign Teratoid Metastasis of Testicular Embryonal Carcinoma: Report of Five Cases

Abstract

Five cases of embryonal carcinoma of the testis with entirely mature teratomatous metastases are presented. Only two other cases have been reported previously. These cases appear to run a prolonged clinical course compared with the usual embryonal carcinomas. It is important that the teratoid elements be recognized as malignant in spite of their benign histologic appearance.