下顎埋伏智歯抜去と下顎枝矢状分割術後に角化囊胞性歯原性腫瘍を生じた1例

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  • A case of keratocystic odontogenic tumor after extraction of lower impacted wisdom teeth and sagittal splitting ramus osteotomy
  • 下顎埋伏智歯抜去と下顎枝矢状分割術後に角化嚢胞性歯原性腫瘍を生じた1例
  • カガク マイフク チシ バッキョ ト カガク シヤジョウ ブンカツ ジュツゴ ニ カクカノウホウセイシ ゲンセイ シュヨウ オ ショウジタ 1レイ

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Keratocystic odontogenic tumor is a benign unicystic or multicystic, intraosseous tumor of odontogenic origin, which is characterized by a lining of parakeratinized stratified squamous epithelium. It can potentially invade and infiltrate surrounding tissues.<br> A case of keratocystic odontogenic tumor after extraction of lower impacted wisdom teeth and mandibular osteotomy is reported.<br> A 22-year-old woman who had undergone extraction of lower impacted wisdom teeth and mandibular osteotomy was referred to our hospital because of discomfort in the left mandible. Panoramic radiography and computed tomographic side of the scans showed a unilocular cystic lesion （20 mm in diameter） in the left mandibular angle.<br> We surgically extirpated the tumor with the patient under general anesthesia.<br> Histopathological examination showed a cystic lesion, which contained keratinized tissue and was lined by parakeratinized stratified squamous epithelium. A keratocystic odontogenic tumor was thus diagnosed.<br> As of 1 year 7 months after the operation, no recurrence has been detected.

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