上顎骨に発生した良性骨芽細胞腫の1例

概要

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The benign osteoblastoma is an uncommon benign bone tumor. The most frequently affected sites include the vertebral column and the long tubular bones, but rarely in the jaws. We experienced a case of large benign osteoblastoma in the maxillary of a 25-year-old female. On July 7, 1985, she was referred to our hospital because of a swelling of the left maxilla. Intraoral examination revealed a diffuse swelling of the buccal aspects of maxilla in the left maxillary premolar and molar regions. Roentgenographic examination revealed a radiopaque area in the left molar region, involving the anterior wall and floor of the maxillary sinus. In addition to the histologic exmination, we diagnosed benign osteoblastoma. The tumor was total excised under general anesthesia. The weight of the extracted tumor was 120g. The postoperative course was uneventful, with no evidence of recurrence after 11 months.