A dura-based intracranial schwannoma in the temporal fossa: A case report

Hayato Funiu, Takamasa Kayama, Kaori Sakurada, Yukihiko Sonoda, Shinjiro Saito, Yoichi Nakazato

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    We report a rare case of a dura-based intracranial schwannoma in the temporal fossa. A 77-year-old man admitted to our hospital with a 5 months history of mild recent memory disturbance. Magnetic resonance imaging (MRI) revealed a slight enhanced solid mass with a cystic mass in the right temporal lobe. Preoperative diagnosis was glioma and then total resection was performed by the transsylvian approach. Dense adhesion of the tumor to dura matter of the middle cranial fossa was confirmed during surgery. Microscopic examination of the tumor showed biphasic pattern with cellular Antoni A and hypocellular Antoni B areas. Immunohistochemically, the tumor was positive for S-100, vimentin and Schwann/2E and was negative for GFAP. From these findings, the tumor was diagnosed as a schwannoma arising from the dura matter of the middle fossa. The patient was discharged from our hospital with no neurological deficits. Intracranial schwannomas, which are not associated with cranial nerves, are rare. Our case was classified according to the origin into dura-based intracranial schwannoma. To our knowledge, only 14 cases of dura-based intracranial schwannoma have been reported, mostly in children and young adults. This represents the oldest case in the literature of dura-based intracranial schwannoma.

    Original languageEnglish
    Pages (from-to)789-793
    Number of pages5
    JournalNeurological Surgery
    Volume31
    Issue number7
    Publication statusPublished - 2003 Jul 1

    Keywords

    • Dura
    • Schwann/2E
    • Schwannoma

    ASJC Scopus subject areas

    • Surgery
    • Clinical Neurology

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