上顎洞に進展した腺腫様歯原性腫瘍の1例

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  • A case of adenomatoid odontogenic tumor extending to the maxillary sinus
  • ジョウガクドウ ニ シンテン シタ センシュ ヨウシ ゲンセイ シュヨウ ノ 1レイ

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Adenomatoid odontogenic tumor （AOT） is composed of odontogenic epithelium in a variety of histoarchitectural patterns. It often occurs around a maxillary canine tooth. Rarely, AOT extends into the nasal cavity and maxillary sinus. We describe a case of AOT that arose in the maxilla and extended into the maxillary sinus.<br> The patient was 33-year-old woman who went to a local dental clinic and was underwent panoramic X-ray examination. A radio-opacity was noted in the right maxillary sinus, and she consulted the department of dental surgery of a certain hospital. A biopsy was performed under local anesthesia, and the pathological diagnosis was AOT. She was then referred to our hospital for further evaluation and treatment.<br> Mild swelling was found in the right cheek. A bony hard gingival bulge was palpated on the labial side of the gingival mucosa, corresponding to the right maxillary first to third teeth. Computed tomography revealed a welldefined radiolucent image including an impacted tooth in the right maxillary sinus. The region contained small radiolucent calcifications. The tumor strongly compressed the bottom of the maxillary sinus and the nasal cavity. Tumor resection and impacted tooth extraction were performed under general anesthesia. Currently, the postoperative course is favorable at 24 months.

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