Benign osteoblastoma of the mandible: Report of a case.

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The subject was an eighteen-year-old man with benign osteoblastoma of the mandible, and it was extremely rare tumor originating in the jaws. He had no painful swelling of the left side mandible.<BR>Findings on physical examination limited to the mandible. Examination revealed that the lesion was a walnut size, firm rigid, and raised one. X-ray examination revelaed a radiolucent lesion with a radiopaque area of the anterior part, and the lesion extended from the second premolar to the second molar. Under general anesthesia, tumor extirpation was carried out. Histological features indicated a growth of woven and/or osteoid bone tissues, abundant osteoblasts with extensive myxoid degeneration, and histological diagnosis of benign osteoblastoma.<BR>In this case, X-ray and histological findings were atypical compared with previously reported cases because of presence of comprehensive myxoid degeneration.
社団法人日本口腔外科学会の論文