Summary
A 26-year-old female with NF2 underwent removal of an acoustic schwannoma via extended retrosigmoid approach with subtonsillar placement of the auditory brainstem implant. The patient had already shown palsy of the lower cranial nerves on the opposite side due to previous surgery. Differing from conventional routes such as the translabyrinthine and the retrosigmoid, the subtonsillar approach [12] enabled us to observe the entire cochlear nucleus and avoid injury to the 9th and 10th cranial nerves when applying the electrode. Hearing in pure tone average was maintained almost at the preoperative level. We present a new use of this approach in placing the electrode and discuss its advantages.
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Ebinger K, Otto S, Arcaroli J, Staller S, Arndt P (2000) Multichannel auditory brainstem implant: US clinical trial results. J Larygol Otol 114 [Suppl] 27: 50–53
Friedland DR, Wackym PA (1999) Evaluation of surgical approaches to endoscopic auditory brainstem implantation. Laryngoscope 109: 175–180
Gutmann DH, Aylsworth A, Carey JC, Korf B, Marks J, Pyeritz RE, Rubenstein A, Viskochil D (1997) The diagnostic evaluation and multidisciplinary management of neurofibromatosis 1 and neurofibromatosis 2. JAMA 278: 51–57
Hitselberger WE, House WF, Edgerton BJ, Whitaker S (1984) Cochlear nucleus implant. Otolaryngol Head Neck Surg 92: 52–54
Klose AK, Sollmann WP (2000) Anatomical variations of landmarks for implantation at the cochlear nucleus. J Larygol Otol 114 [Suppl] 27: 8–10
Matsushima T, Inoue T, Inamura T, Natori Y, Ikezaki K, Fukui M (2001) Transcerebellomedullary fissure approach with special reference to methods of dissecting the fissure. J Neurosurg 94:257–264
McCreery DG, Shannon RV, Moore JK, Chatterjee M (1998) Accessing the tonotopic organization of the ventral cochlear nucleus by intranuclear microstimulation. IEEE Trans Rehab Eng 6: 391–399
Otto SR, Brackmann DE, Hitselberger WE, Shannon RV (2001) Brainstem electronic implants for bilateral anacusis following surgical removal of cerebellopontine angle lesions. Otolaryngol Clin North Am 34: 485–499
Quester R, Schoeder R (1999) Topographic anatomy of the cochlear nuclear region at the floor of the fourth ventricle in humans. J Neurosurg 91: 446–476
Sollmann WP, Laszig R, Marangos N (2000) Surgical experiences in 58 cases using the Nucleus 22 multichannel auditory brainstem implant. J Larygol Otol 114 [Suppl] 27: 23–26
Waring MD (1995) Auditory brainstem responses evoked by electrical stimulation of the cochlear nucleus in human subjects. Electroenceph Clin Neurophysiol 96: 338–347
Ziyal IM, Sekhar LN, Sales E (1999) Subtonsillar-transcerebellomedullary approach to lesions involving the fourth ventricle, the cerebellomedullary fissure and the lateral brainstem. Br J Neurosurg 13: 276–284
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© 2003 Springer-Verlag Wien
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Seki, Y., Samejima, N., Kumakawa, K., Komatsuzaki, A. (2003). Subtonsillar placement of auditory brainstem implant. In: Katayama, Y. (eds) Neurosurgical Re-Engineering of the Damaged Brain and Spinal Cord. Acta Neurochirurgica Supplements, vol 87. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6081-7_18
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DOI: https://doi.org/10.1007/978-3-7091-6081-7_18
Publisher Name: Springer, Vienna
Print ISBN: 978-3-7091-7223-0
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