A rare carcinoma that arises from the paranasal sinus. It is characterized by the presence of epidermoid cells, mucus producing cells, and cells of intermediate type. The disease is MONDO_0044956 (paranasal sinus mucoepidermoid carcinoma). Also known as: accessory sinus mucoepidermoid carcinoma, mucoepidermoid carcinoma of accessory sinus, mucoepidermoid carcinoma of paranasal sinus, mucoepidermoid carcinoma of the accessory sinus, mucoepidermoid carcinoma of the paranasal sinus.