Intraneural epithelial islands associated with a periapical cyst.

Epithelial islands associated with nerve bundles have been reported in the mandible and maxilla. An example of such intraneural rests is reported in association with a radicular cyst. The differential diagnosis of intraneural epithelial islands must include benign odontogenic rests, remnants of nasopalatine duct in the anterior maxilla, the organ of Chievitz, and neural invasion by a carcinoma.