Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation

Sudhoff H, Scholtz LU, Gehl HB, Todt I (2021)
Brain Sciences 11(9): 1221.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Sudhoff, HolgerUniBi ; Scholtz, Lars Uwe; Gehl, Hans Björn; Todt, Ingo
Abstract / Bemerkung
Background: The combination of intralabyrinthine schwannoma (ILS) removal and cochlear implantation is the standard of care after surgical resection for audiological rehabilitation. Intracochlear ILS is not only the most frequent tumor in this group of schwannomas, but it is also, to some degree, surgically the most challenging because of its position behind the modiolus. Recent developments in the knowledge of implant position, implant magnet choice, and magnetic resonance imaging (MRI) sequences make an MRI follow-up after surgical removal possible. Thus far, no results are known about the surgical success and residual rate of these kind of tumors. The aim of the present study was to perform an early MRI follow-up for the evaluation of residual or recurrent intracochlear ILS after surgical removal and cochlear implantation.
Methods: In a retrospective study, we evaluated seven patients after an intracochlear ILS removal and single-stage cochlear implantation with a mean period of 13.4 months post surgery with a 3T T1 GAD 2 mm sequence for a residual ILS. Patients were operated on using an individualized technique concept. Results: In six out of seven cases, 3 T T1 GAD 2 mm MRI follow-up showed no residual or recurrent tumor. In one case, a T1 signal indicated a tumor of the upper inner auditory canal (IAC) at the MRI follow up.
Conclusion: MRI follow-up as a quality control tool after ILS removal and cochlear implantation is highly important to exclude residual tumors. Long-term MRI evaluation results are needed and can be obtained under consideration of implant position, implant magnet, and MRI sequence choice. A preoperative MRI slice thickness less than 2 mm can be recommended to visualize possible modiolar and IAC expansion.
Stichworte
MRI; cochlear implant; intracochlear intralabyrinthine schwannoma
Erscheinungsjahr
2021
Zeitschriftentitel
Brain Sciences
Band
11
Ausgabe
9
Art.-Nr.
1221
eISSN
2076-3425
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2957855

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Sudhoff H, Scholtz LU, Gehl HB, Todt I. Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation. Brain Sciences. 2021;11(9): 1221.
Sudhoff, H., Scholtz, L. U., Gehl, H. B., & Todt, I. (2021). Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation. Brain Sciences, 11(9), 1221. https://doi.org/10.3390/brainsci11091221
Sudhoff, H., Scholtz, L. U., Gehl, H. B., and Todt, I. (2021). Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation. Brain Sciences 11:1221.
Sudhoff, H., et al., 2021. Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation. Brain Sciences, 11(9): 1221.
H. Sudhoff, et al., “Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation”, Brain Sciences, vol. 11, 2021, : 1221.
Sudhoff, H., Scholtz, L.U., Gehl, H.B., Todt, I.: Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation. Brain Sciences. 11, : 1221 (2021).
Sudhoff, Holger, Scholtz, Lars Uwe, Gehl, Hans Björn, and Todt, Ingo. “Quality Control after Intracochlear Intralabyrinthine Schwannoma Resection and Cochlear Implantation”. Brain Sciences 11.9 (2021): 1221.
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2021-10-01T07:53:09Z
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