Monarch Disease Ontology entry MONDO_0020694 (salivary gland epithelial myoepithelial carcinoma) is a carcinoma that arises from the salivary glands, most often the parotid gland. It presents as a slow growing and painless mass. It is characterized by the presence of duct-like structures lined by two layers of cells, an inner layer composed of epithelial-type cells and an outer layer composed of clear, myoepithelial-type cells.