Ameloblastic fibro-odontoma of the anterior mandible in a 22-month-old boy.

We report an ameloblastic fibro-odontoma (AFO) presenting in the anterior mandible as a "bump on his gums" in a 22-month-old boy. An occlusal radiograph revealed a well-circumscribed radiolucency with scattered radiopaque foci. The tumor was enucleated under general anesthesia. The histologic findings were characteristic of an AFO, a mixed odontogenic tumor most common in the posterior jaws, primarily affecting individuals with an average age of 10 years. The clinical presentation, microscopic findings, differential diagnoses, and treatment are discussed.