Anterior transpetrosal approach for petroclival tumors

Takeshi Kawase, Kazunari Yoshida, Koichi Uchida, Takayuki Oohira

Research output: Contribution to journalArticlepeer-review


The petroclival or prepontine tumors originating medial to the trigeminal nerve include meningiomas, trigeminal neurinomas, laterally extended chordomas and prepontine epidermoids. They frequently show middle fossa or parasellar extension and have been one of the difficult tumors requiring a combined large craniotomy or multiple step surgery. Here, we will present a surgical method of tumor removal through a keyhole, epidurally created in a petrous apex. The technical points presented are based on my experience of 95 cases. This approach has the following advantages: (1) One-stage epidural surgery to the petroclival and dumbbell parasellar–clival lesions through a small craniotomy;(2) Minimal venous complications compared to the presigmoid approach;(3) Minimal facial and lower cranial nerves injury by jumping into the petroclival area medial to the internal auditory meatus;(4) Bloodless tumor removal being possible by detachment of the tentorial artery;(5) Hearing preservation by limited petrous resection.

Original languageEnglish
Pages (from-to)287-291
Number of pages5
JournalInternational Congress Series
Issue numberC
Publication statusPublished - 2002 Dec 1


  • Brain tumor
  • Clivus
  • Skull base
  • Transpetrosal approach

ASJC Scopus subject areas

  • Medicine(all)


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