Mediastinal Mixed Embryonal Carcinoma and Teratoma

**Semantic type:** Neoplastic Process

**Definition:** An extragonadal non-seminomatous malignant germ cell tumor that arises from the mediastinum and contains teratoma and embryonal carcinoma components.

**Synonyms:** - Mediastinal Teratocarcinoma - Mixed Embryonal Carcinoma and Teratoma of Mediastinum - Mixed Embryonal Carcinoma and Teratoma of the Mediastinum - Teratocarcinoma of Mediastinum - Teratocarcinoma of the Mediastinum