Sclerosing polycystic adenosis with intraluminal crystalloids of the buccal mucosa: A case report and review of the literature

Sclerosing polycystic adenosis (SPA) is a recently described, rare, neoplastic or reactive sclerosing inflammatory process of the salivary glands. It is similar to sclerosing adenosis or adenosis tumor of the mammary gland, but pathogenesis is still unclear. The commonest sites of involvement are parotid and submandibular gland, while minor salivary glands are very rare. Here we report an extremely rare case of SPA with intraluminal crystalloids in the buccal mucosa.