Endoscopic Endonasal Approach for Extracranial Trigeminal Schwannoma: Two Case Reports

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  • Mine Mihoko
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine
  • Takahashi Masayuki
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine
  • Yui Mitsuko
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine
  • Tatehara Shun
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine
  • Inokuchi Go
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine
  • Nibu Kenichi
    Department of Otorhinolaryngology, Head and Neck Surgery, Kobe University School of Medicine

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Other Title
  • 経上顎洞内視鏡下アプローチで減量した頭蓋外三叉神経鞘腫の２症例
  • ケイ ジョウガクドウ ナイシキョウ カ アプローチ デ ゲンリョウ シタ ズガイ ガイ サンサ シンケイ サヤ シュ ノ 2 ショウレイ

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Abstract

<p>　 Extracranial trigeminal schwannoma, a rare tumor, accounts for about 5% of all trigeminal schwannomas. We report two cases of extracranial trigeminal schwannoma located in the pterygopalatine fossa, which were treated by the endoscopic endonasal trans-maxillary approach. Intracapsular subtotal tumor removal was performed. In one patient, maxillary artery ligation was necessary. The symptoms of cheek paresthesia were relieved in both patients after the surgery. Though surgical indications for trigeminal schwannomas are limited, tumor removal is required in symptomatic or young patients. Symptomatic trigeminal schwannoma located in the pterygopalatine fossa could be removed by the endoscopic trans-maxillary approach.</p>

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