Myxoma of the mandible with unusual radiographic appearance.

Myxoma of the jaws is a fairly frequent bone tumor classified as a benign odontogenic neoplasm. The radiographic picture varies according to its evolution and, it many cases, diagnosis is not easy. A new case with an unusual radiographic appearance is reported. On occlusal radiographic examination the tumor showed multiple spicules of bone with a classic "sun-ray" effect. Only two similar cases were found in the literature. Oral and maxillofacial surgeons should be aware of this unusual presentation so that a misdiagnosis of malignant bone tumor is not made.