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Cochlear patency following translabyrinthine vestibular schwannoma resection: implications for hearing rehabilitation

  • V Carswell (a1), J A Crowther (a1), R Locke (a1), W Taylor (a2) and G Kontorinis (a1)...

Abstract

Objective

To examine when cochlear fibrosis occurs following a translabyrinthine approach for vestibular schwannoma resection, and to determine the safest time window for potential cochlear implantation in cases with a preserved cochlear nerve.

Methods

This study retrospectively reviewed the post-operative magnetic resonance imaging scans of patients undergoing a translabyrinthine approach for vestibular schwannoma resection, assessing the fluid signal within the cochlea. Cochleae were graded based on the Isaacson et al. system (from grade 0 – no obstruction, to grade 4 – complete obliteration).

Results

Thirty-nine patients fulfilled the inclusion criteria. The cochleae showed no evidence of obliteration in: 75 per cent of patients at six months, 38.5 per cent at one year and 27 per cent beyond one year. Most changes happened between 6 and 12 months after vestibular schwannoma resection, with cases of an unobstructed cochlear decreasing dramatically, from 75 per cent to 38.5 per cent, within this time.

Conclusion

The progress of cochlear obliteration that occurred between 6 and 12 months following vestibular schwannoma resection indicates that the first 6 months provides a safer time window for cochlear patency.

Copyright

Corresponding author

Author for correspondence: Mr Georgios Kontorinis, Department of Otolaryngology, Queen Elizabeth University Hospital, 1345 Govan Road, Glasgow G51 4TF, Scotland, UK E-mail: gkontorinis@gmail.com

Footnotes

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Mr G Kontorinis takes responsibility for the integrity of the content of the paper

Footnotes

References

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1Hougaard, D, Norgaard, A, Pedersen, T, Bibby, BM, Ovesen, T. Is a redefinition of the growth criteria of vestibular schwannomas needed? Am J Otolaryngol 2014;35:192–7
2Springborg, JB, Fugleholm, K, Poulsgaard, L, Cayé-Thomasen, P, Thomsen, J, Stangerup, SE. Outcome after translabyrinthine surgery for vestibular schwannomas: report on 1244 patients. J Neurol Surg B Skull Base 2012;73:168–74
3Gal, TJ, Shinn, J, Huang, B. Current epidemiology and management trends in acoustic neuroma. Otolaryngol Head Neck Surg 2010;142:677–81
4Wu, H, Sterker, J. Translabyrinthine removal of large acoustic neuromas in young adults. Auris Nasus Larynx 2000;27:201–5
5Lustig, LR, Yeagle, J, Driscoll, CL, Blevins, N, Francis, H, Niparko, JK. Cochlear implantation in patients with neurofibromatosis type 2 and bilateral vestibular schwannoma. Otol Neurotol 2006;27:512–18
6Roehm, PC, Mallen-St Clair, J, Jethanamest, D, Golfinos, J, Shapiro, W, Waltzman, S et al. Auditory rehabilitation of patients with neurofibromatosis type 2 by using cochlear implants. J Neurosurg 2011;115:827–34
7Belal, A. Is cochlear implantation possible after acoustic tumour removal? Otol Neurotol 2001;22:497500
8Hassepass, F, Arndt, S, Aschendorff, A, Laszig, R, Wesarg, T. Cochlear implantation for hearing rehabilitation in single-sided deafness after translabyrinthine vestibular schwannoma surgery. Eur Arch Otorhinolaryngol 2016;273:2373–83
9Kim, JW, Han, JH, Kim, JW, Moon, IS. Simultaneous translabyrinthine tumour removal and cochlear implantation in vestibular schwannoma patients. Yonsei Med J 2016;57:1535–9
10Kameswaran, M, Kumar, RS, Murali, S, Natarajan, K, Krishnan, V. Cochlear implantation in ossified cochlea - Merf experience. Indian J Otolaryngol Head Neck Surg 2005;57:327–9
11Isaacson, B, Booth, T, Kutz, JW, Lee, KH, Roland, PS. Labyrinthitis ossificans: how accurate is MRI in predicting cochlear obstruction? Otolaryngol Head Neck Surg 2009;140:692–6
12Wanna, GB, Carlson, ML, Blachon, GS, Noble, JH, Dawant, BM, Labadie, RF et al. Implantation of the completely ossified cochlea: an image-guided approach. Otol Neurotol 2013;34:522–5
13Nichani, J, Green, K, Hans, P, Bruce, I, Henderson, L, Ramsden, R. Cochlear implantation after bacterial meningitis in children: outcomes in ossified and non-ossified cochleae. Otol Neurotol 2011;32:784–9
14Sargent, EW, Liao, E, Gonda, RL. Cochlear patency after transmastoid labyrinthectomy for Meniere's syndrome. Otol Neurotol 2016;37:937–9
15Booth, T, Roland, P, Kutz, J, Lee, K, Isaacson, B. High-resolution 3-D T2-weighted imaging in the diagnosis of labyrinthitis ossificans: emphasis on subtle cochlear involvement. Pediatr Radiol 2013;43:1584–90
16Beutner, C, Mathys, C, Turowski, B, Schipper, J, Klenzner, T. Cochlear obliteration after translabyrinthine vestibular schwannoma surgery. Eur Arch Otorhinolaryngol 2015;272:829–33
17Arriaga, MA, Marks, S. Simultaneous cochlear implantation and acoustic neuroma resection: imaging considerations, technique, and functional outcome. Otolaryngol Head Neck Surg 1995;112:325–8

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