下顎骨に発生したエナメル上皮線維肉腫の1例

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タイトル別名
  • A case of ameloblastic fibrosarcoma of the mandible
  • カガクコツ ニ ハッセイ シタ エナメル ジョウヒ センイ ニクシュ ノ 1レイ

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抄録

Ameloblastic fibrosarcoma is a very rare malignant odontogenic tumor. Ameloblastic fibrosarcoma consists of benign epithelial components with the same features as those of ameloblastic fibroma, as well as malignant mesenchymal components. We report a case of ameloblastic fibrosarcoma arising in the mandible. A 32-year-old woman underwent left hemimandiblectomy, supraomohyoid neck dissection, and reconstruction. Immunohistochemically, the Ki-67 labeling index was low in the epithelial components of the tumor (1.6 %), but high in the malignant mesenchymal components (19.8 %). After operation, adjuvant chemotherapy was administered. There was no recurrence or metastasis 3 years after surgery.

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