The translabyrinthine approach does not preserve hearing, while the retrosigmoid approach
Functional surgery of cerebellopontine angle by minimally invasive retrosigmoid approach.
Tokyo) introduce, describe, and promote the retrosigmoid approach not only for otologists but for any surgeon dealing with pathologies of the cerebellopontine angle.
The last five chapters detail the fully endoscopic endonasal approach, the fully endoscopic transglabellar approach, the fully endoscopic supraorbital approach, the fully endoscopic retrosigmoid approach
, and the fully endoscopic subtemporal approach.
These leaks are usually the result of an iatrogenic injury during removal The retrosigmoid approach is commonly associated with leaks that occur through the lateral end of the internal auditory canal, through the perilabyrinthine cells extending to the region of the internal auditory canal, or through the retrosigmoid air cells.
1) We present the case of a patient who underwent acoustic neuroma removal via a retrosigmoid approach and subsequently developed a CSF leak through an infracochlear air cell tract.
Both procedures are performed via the retrosigmoid approach during the same surgical step.
When the auditory threshold is between 40 and 80 dB, we perform a vestibular neurectomy via a retrosigmoid approach.