A carcinoma that arises from the major salivary glands. It usually arises from the parotid gland. It is the most common primary carcinoma of the salivary glands and usually presents as a firm and painless mass. It is characterized by the presence of epidermoid cells, mucus producing cells, and cells of intermediate type. The majority of cases have a favorable outcome. The disease is MONDO_0006286 (major salivary gland mucoepidermoid carcinoma). Also known as: major salivary gland mucoepidermoid cancer, mucoepidermoid carcinoma of Major salivary gland, mucoepidermoid carcinoma of the Major salivary gland.