Pseudocapsule formation after gamma knife radiosurgery for trigeminal neurinoma - Case report

Takenori Akiyama, Eiji Ikeda, Takeshi Kawase, Kazunari Yoshida

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A 38-year-old female presented with a trigeminal neurinoma manifesting as left facial paresthesia. The diagnosis was based on magnetic resonance (MR) imaging findings. Gamma knife radiosurgery (GKR) was performed at another hospital at her request. Fifteen months after the GKR, follow-up MR imaging revealed tumor regrowth causing extensive compression of the brainstem, and cyst formation in the tumor. Her clinical symptoms including facial pain and diplopia had worsened, so she was referred to our affiliated hospital for microsurgery. The tumor was totally resected, but the left trigeminal nerve had to be sacrificed because of pseudocapsule formation which covered both the tumor and the trigeminal nerve fibers. The diplopia disappeared, but her facial pain deteriorated after the operation. GKR can induce fibrosis or degenerative change in nearby structures, which may complicate subsequent surgery.

Original languageEnglish
Pages (from-to)526-529
Number of pages4
JournalNeurologia Medico-Chirurgica
Volume45
Issue number10
DOIs
Publication statusPublished - 2005

Fingerprint

Radiosurgery
Neurilemmoma
Facial Pain
Trigeminal Nerve
Diplopia
Neoplasms
Magnetic Resonance Imaging
Microsurgery
Paresthesia
Nerve Fibers
Brain Stem
Cysts
Fibrosis

Keywords

  • Gamma knife radiosurgery
  • Pseudocapsule
  • Trigeminal neurinoma

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery

Cite this

Pseudocapsule formation after gamma knife radiosurgery for trigeminal neurinoma - Case report. / Akiyama, Takenori; Ikeda, Eiji; Kawase, Takeshi; Yoshida, Kazunari.

In: Neurologia Medico-Chirurgica, Vol. 45, No. 10, 2005, p. 526-529.

Research output: Contribution to journalArticle

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