A dumbbell shaped schwannoma in the parapharyngeal space

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  • IIJIMA Kyou
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine
  • KURITA Hiroshi
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine
  • KANEKO Hiromi
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine
  • OKUBO Hiroki
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine
  • MIYAZAWA Hideki
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine
  • KURASHINA Kenji
    Department of Dentistry and Oral Surgery, Shinshu University School of Medicine

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  • 副咽頭間隙に生じたダンベル型神経鞘腫の１例
  • ショウレイ ホウコク フクイントウ カンゲキ ニ ショウジタ ダンベルガタ シンケイショウ シュ ノ 1レイ

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Abstract

A case of schwannoma extending from the parotid gland to the parapharyngeal space is presented. The patient was a 53-year-old woman. She was referred to us because of a swelling under the left auricle. CT scanning and MRI revealed a tumor extending from the deep lobe of the parotid gland into the parapharyngeal space, compressing the stylomandibular tunnel. This tumor was referred to as a “dumbbell tumor” because of its special shape. Such tumors are rare. The tumor was removed by an extraoral and mandibular swing approach. The histopathological diagnosis was schwannoma with a mixture of Antoni type A and B components. After sugery, no evidence of recurrence has been observed to date.

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