舌背後方部に発症した骨分離腫の１例

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  • A case of osseous choristoma on the posterior dorsum of the tongue.

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A case of osseous choristoma arising in the tongue of a 9-year-old boy is presented.<BR>The patient complained of a painless tumor on the posterior dorsum of the tongue. The lesion was a hard, pedunculated, polypoid mass, measuring 5 mm in diameter, and was covered with intact mucosa. He underwent surgical resection of the tumor under general anesthesia.<BR>Histological findings showed a well-circumscribed mass of bone beneath the normal squamous epithelium. The bone tissue showed a definite lamellar structure and its surface was lined with flattened cells. On part of the bone surface, osteoid deposition accompanied by activated osteoblasts was observed, which suggested continued remodelling of bone tissue. A definitive diagnosis of lingual osseous choristoma was made.<BR>The posteoperative course was uneventful without recurrence for about 11 months.

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