Middle cranial fossa approach to acoustic neuromas: A comparison to the suboccipital approach

Takayuki Ohira, Ryuzo Shiobara, Takeshi Kawase

Research output: Contribution to journalArticle


Since 1976, we have operated on more than 900 acoustic neuromas using the extended middle cranial fossa approach (EMCF). The EMCF is a combination of the middle cranial fossa approach with a tentorial opening and the posterior petrosal (extended translabyrinthine) approach. This approach includes auditory canal unroofing for intracanalicular tumors, an additional tentorial incision for small sized tumors, and an additional posterior petrosectomy and mastoidectomy for medium and large tumors. The advantages of the EMCF are easy exposure of the intracanalicular tumor and early identification of the facial nerve. Less invasive dissection of the brainstem is accomplished using the EMCF than the suboccipital approach in large tumors. However, contact damage to the facial nerve must be avoided during tumor resection.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalJapanese Journal of Neurosurgery
Issue number2
Publication statusPublished - 2007 Feb



  • Acoustic neuroma
  • Facial nerve
  • Middle cranial fossa approach

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

Cite this