NCIt definition : A benign, well-circumscribed or encapsulated neoplasm that arises from the salivary
glands, usually the parotid. It is characterized by nodular and less often multinodular
proliferation of cuboidal ductal cells and attenuated myoepithelial cells, resembling
bi-layered intercalated ducts. Most lesions are incidental findings, usually measuring
less than 5 mm.;