Central Nervous System Choriocarcinoma

**Semantic type:** Neoplastic Process

**Definition:** A malignant germ cell tumor of the central nervous system characterized by extra-embryonic differentiation along trophoblastic lines. The diagnosis requires the identification of cytotrophoblastic elements, as well as syncytiotrophoblastic giant cells. (WHO)

**Synonyms:** - Choriocarcinoma of CNS - Choriocarcinoma of the CNS