Extragonadal Germ Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** A germ cell tumor arising in an anatomic site other than the testis or ovary (e.g., central nervous system, lung, mediastinum, and retroperitoneum).

**Synonyms:** - Extragonadal GCT, NOS - Extragonadal Germ Cell Neoplasm - Extragonadal Germ Cell Neoplasms - Extragonadal germ cell tumors, NOS - Neoplasm of Extragonadal Germ Cell - Neoplasm of the Extragonadal Germ Cell - Primary Extragonadal Germ Cell Tumor - Tumor of Extragonadal Germ Cell - Tumor of the Extragonadal Germ Cell - extragonadal germ cell tumor