Vestibular Schwannoma Volume as a Predictor of Hearing Outcome After Surgery

2007 ◽  
Vol 28 (6) ◽  
pp. 822-827 ◽  
Author(s):  
Mislav Gjuric ◽  
Marica Zizic Mitrecic ◽  
Holger Greess ◽  
Michael Berg
Keyword(s):  
Vestibular Schwannoma ◽  
Hearing Outcome

Hearing outcomes of vestibular schwannoma patients managed with ‘wait and scan’: predictive value of hearing level at diagnosis

2010 ◽  
Vol 124 (5) ◽  
pp. 490-494 ◽  
Author(s):  
S-E Stangerup ◽  
M Tos ◽  
J Thomsen ◽  
P Caye-Thomasen
Keyword(s):  
Vestibular Schwannoma ◽  
Predictive Value ◽  
High Frequency ◽  
Pure Tone ◽  
Hearing Level ◽  
Speech Discrimination ◽  
Resonance Imaging ◽  
Hearing Outcome ◽  
Hearing Outcomes ◽  
Better Than

AbstractAims:This study aimed to evaluate the predictive value of both hearing level (at various frequencies) and speech discrimination for forecasting hearing outcome after a period of observation, in patients with vestibular schwannoma.Subjects:Over a 33-year period, 1144 patients with vestibular schwannoma were allocated to ‘wait and scan’ management, with annual magnetic resonance imaging and audiological examination. Two complete pure tone and speech discrimination audiograms were available for 932 patients.Results:The predictive value of initial hearing level better than 10 dB for forecasting hearing outcome after observation increased from 59 per cent at 250 Hz to 94 percent at 4000 Hz. At diagnosis, hearing level of 10 dB or better at 4000 Hz was found in only 18 of the 932 VS ears, while good speech discrimination was found in 159 patients (17 per cent). Of the latter patients, 138 maintained good hearing after observation.Conclusion:In vestibular schwannoma patients, good high frequency hearing and good speech discrimination at diagnosis are useful tools in predicting good hearing after observation.

Intraoperative Cochlear Nerve Monitoring in Vestibular Schwannoma Surgery – Does It Really Affect Hearing Outcome?

2007 ◽  
Vol 13 (1) ◽  
pp. 58-64 ◽  
Author(s):  
Enrico Piccirillo ◽  
Harukazu Hiraumi ◽  
Masashi Hamada ◽  
Alessandra Russo ◽  
Alessandro De Stefano ◽  
...  
Keyword(s):  
Vestibular Schwannoma ◽  
Cochlear Nerve ◽  
Nerve Monitoring ◽  
Hearing Outcome

Length of Tumor-Cochlear Nerve Contact and Hearing Outcome after Surgery for Vestibular Schwannoma

Skull Base ◽  
2007 ◽  
Vol 16 (S 1) ◽  
Author(s):  
Raymund Yong ◽  
Brian Westerberg ◽  
Ryojo Akagami
Keyword(s):  
Vestibular Schwannoma ◽  
Cochlear Nerve ◽  
Hearing Outcome

How Well Does Intraoperative Audiologic Monitoring Predict Hearing Outcome During Middle Fossa Vestibular Schwannoma Resection?

2018 ◽  
Vol 39 (7) ◽  
pp. 908-915 ◽  
Author(s):  
Daniel Q. Sun ◽  
C. Blake Sullivan ◽  
Raymond W. Kung ◽  
Megan Asklof ◽  
Marlan R. Hansen ◽  
...  
Keyword(s):  
Vestibular Schwannoma ◽  
Middle Fossa ◽  
Hearing Outcome

scholarly journals Long-Term Hearing Outcome After Retrosigmoid Removal of Vestibular Schwannoma

2013 ◽  
Vol 53 (10) ◽  
pp. 688-694 ◽  
Author(s):  
Akira NAKAMIZO ◽  
Megumu MORI ◽  
Daisuke INOUE ◽  
Toshiyuki AMANO ◽  
Masahiro MIZOGUCHI ◽  
...  
Keyword(s):  
Vestibular Schwannoma ◽  
Hearing Outcome

Length of tumor–cochlear nerve contact and hearing outcome after surgery for vestibular schwannoma

2008 ◽  
Vol 108 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Raymund L. Yong ◽  
Brian D. Westerberg ◽  
Charles Dong ◽  
Ryojo Akagami
Keyword(s):  
Hearing Loss ◽  
Vestibular Schwannoma ◽  
Univariate Analysis ◽  
Internal Auditory Canal ◽  
Hearing Preservation ◽  
Magnetic Resonance Images ◽  
Auditory Evoked Potential ◽  
Cochlear Nerve ◽  
Hearing Outcome ◽  
Interpeak Latency

Object Tumor size is likely to be a major determinant of hearing preservation after surgery for vestibular schwannoma. Findings in some large case series have not supported this concept, possibly due to variation in the technique used for tumor measurement. The authors sought to determine if the length of tumor–cochlear nerve contact was predictive of hearing outcome in adults undergoing resection of a vestibular schwannoma. Methods Patients who underwent a hearing-preserving approach for resection of a vestibular schwannoma at one institution by a neurosurgeon/neurotologist team between 2001 and 2005 were screened. Patients with American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS) Class A or B hearing preoperatively were included. Magnetic resonance images were reviewed and used to calculate the length of tumor–cochlear nerve contact. Tumors were also measured according to AAO-HNS guidelines. Results Thirty-one patients were included, 8 (26%) of whom had hearing preservation. Univariate analysis revealed that extracanalicular length of tumor–cochlear nerve contact (p = 0.0365), preoperative hearing class (p = 0.028), I–V interpeak latency of the brainstem auditory evoked potential (p = 0.021), and the interaural I–V interpeak latency difference (p = 0.018) were predictive of hearing outcome. Multivariate analysis confirmed the predictive value of extra-canalicular length of contact and preoperative hearing class (p = 0.041 and p = 0.0235, respectively). Conclusions Vestibular schwannomas with greater lengths of tumor–cochlear nerve contact increase a patient's risk for hearing loss after surgery with attempted hearing preservation. Involvement of the internal auditory canal produces a constant risk of hearing loss. Data from the experience of a single surgical team can be used to estimate the probability of good hearing outcome for any given patient with serviceable hearing and a vestibular schwannoma.

Radiosurgery of vestibular schwannoma: prognostic factors for hearing outcome using 3D-constructive interference in steady state (3D-CISS)

2018 ◽  
Vol 194 (12) ◽  
pp. 1132-1143 ◽  
Author(s):  
Franca Wagner ◽  
Matteo Gandalini ◽  
Arsany Hakim ◽  
Ekin Ermis ◽  
Dominic Leiser ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
Steady State ◽  
Vestibular Schwannoma ◽  
Constructive Interference ◽  
Hearing Outcome
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