SMARCA4-Deficient Sinonasal Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** An SWI/SNF-deficient sinonasal carcinoma characterized by inactivating mutation of SMARCA4 gene. It usually affects the nasal sinuses. It is composed of malignant large epithelioid anaplastic cells.

**Synonyms:** - Sinonasal SMARCA4 -Deficient Carcinoma