Peripheral osteoma in an unusual region of the mandible: A case report

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Osteomas are benign tumors characterized by bony growth that commonly occur in the sinuses. Peripheral osteomas in the jawbone are relatively uncommon, with only 8 cases, including the present case, reported in the mandibular sigmoid notch. The patient had a peripheral osteoma that developed from the sigmoid notch of the mandible to the condylar neck. We performed panoramic radiography and computed tomography (CT) for preoperative image analysis, and created a three-dimensional model based on the CT data. Using the model, we were able to explain the lesion to the patient in an easy-to-understand manner. The pathological diagnosis of the resected specimen was peripheral osteoma. At 21 months after the operation, no recurrence has been observed.

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