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Year : 2020  |  Volume : 7  |  Issue : 2  |  Page : 111-116

Osseous choristoma of the mandibular buccal vestibule: A case report and review of the literature

1 Department of Oral Medicine and Diagnostic Science, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
2 Department of Oral and Maxillofacial Surgery, College of Dentistry, King Saud University, Riyadh, Saudi Arabia

Correspondence Address:
Dr. Reema Alshawaf
Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh
Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/sjos.SJOralSci_80_19

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Osseous choristoma is a tumor-like growth of lamellar bone which is found in a location where the bone does not normally form. It rarely occurs in the mandibular buccal vestibule. These lesions are either developmental (arising from ectopic mesenchymal cells) or a consequence of trauma and chronic irritation. A 50-year-old male was presented for diagnostic evaluation and surgical management of a long-standing hard mass involving the buccal vestibular sulcus of the mandible. The lesion was clinically examined and radiographically investigated using panoramic, intraoral, and cone-beam computed tomography images. Surgical excision was considered the ideal treatment, and postoperative histopathological examination confirmed a diagnosis of osseous choristoma. There was no evidence of recurrence over a 2-year follow-up period. Osseous choristoma involving the mandibular buccal vestibule can be misdiagnosed as an osteoma because of its clinical presentation; however, the lesion is typically not attached to the underlying bone and can be easily separated from the surrounding tissues. The diagnosis is based on clinical and radiographic examinations and generally confirmed by histopathological analyses.

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