Sinonasal Teratocarcinosarcoma

**Semantic type:** Neoplastic Process

**Definition:** A malignant sinonasal neoplasm with combined histological features of teratoma and carcinosarcoma, lacking malignant germ cell components. (WHO 2017)

**Synonyms:** - Nasal Cavity and Paranasal Sinus Teratocarcinosarcoma