Germ Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** A benign or malignant, gonadal or extragonadal neoplasm that originates from germ cells. Representative examples include teratoma, seminoma, embryonal carcinoma, and yolk sac tumor.

**Synonyms:** - Germ Cell Neoplasm - Germ Cell Neoplasms - Germ cell tumor, NOS - Neoplasm of Germ Cell - Neoplasm of the Germ Cell - Tumor of Germ Cell - Tumor of the Germ Cell - germ cell tumor