Malignant Mediastinal Nongerminomatous Germ Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** An extragonadal nongerminomatous malignant germ cell tumor that arises from the mediastinum. This category includes embryonal carcinoma, yolk sac tumor, choriocarcinoma, and mixed germ cell tumors.

**Synonyms:** - Malignant Mediastinal Non-Seminomatous Germ Cell Tumor - Mediastinal Malignant Non-Seminomatous Germ Cell Neoplasm - Mediastinal Malignant Non-Seminomatous Germ Cell Tumor - Non-Seminomatous Malignant Germ Cell Neoplasm of Mediastinum - Non-Seminomatous Malignant Germ Cell Neoplasm of the Mediastinum - Non-Seminomatous Malignant Germ Cell Tumor of Mediastinum - Non-Seminomatous Malignant Germ Cell Tumor of the Mediastinum