Mediastinal Mixed Nongerminomatous Germ Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** An extragonadal nongerminomatous malignant germ cell tumor that arises from the mediastinum and is composed of two or more germ cell tumor types. It manifests with respiratory distress, thoracic pain, cough, superior vena cava syndrome, or hoarseness.

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