label: SMARCA4 -Deficient Sinonasal Carcinoma
label_lc: smarca4 -deficient sinonasal carcinoma
description: "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."