Testicular Mixed Teratoma and Yolk Sac Tumor, Prepubertal-Type

**Semantic type:** Neoplastic Process

**Definition:** A very rare testicular germ cell tumor that combines teratoma and yolk sac tumor. It usually affects young children. It is not associated with chromosome 12p amplification or germ cell neoplasia in situ.

**Synonyms:** - Testicular Mixed Teratoma and Yolk Sac Tumor, Prepubertal Type