Hearing preservation in patients undergoing vestibular schwannoma surgery: comparison of middle fossa and retrosigmoid approaches

Irving, Richard; Jackler, Robert K.; Pitts, Lawrence H.

doi:10.3171/jns.1998.88.5.0840

Cited by 125 publications

(85 citation statements)

References 24 publications

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“…The adherence of the tumor shell to the nerve itself and, tumor size and form usually determine the intensity of mechanical manipulation during dissection of tumor. Our 6 month follow up results for facial nerve preservation was similar and comparable to other reports [4,7,33,39,41,[43][44][45]. Therefore, the use of the laser in proximity of the nerve seems to be safe enough and is recommended especially when having a direct view of the facial nerve such as in the RS approach.…”

Section: Discussionsupporting

confidence: 77%

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Vestibular Schwannomas Microsurgery Assisted by Flexible Hand-Held 2 micro-Thulium-Fiber Laser

Mastronardi

Cacciotti

Roperto

et al. 2016

Caspian.J.Neurol.Sci

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Background: Vestibular Schwannoma (VS) is one of the skull base tumors originating from vestibular portion of eighth cranial nerve. Recently, 2 microThulium laser is used in the surgery of some intracranial tumors. Objectives: Assessing the efficacy of 2 micro-Thulium flexible hand-held laser fiber (Revolixjr ® ) in microsurgical removal of VS. Materials and Methods:This retrospective non-randomized study was carried out from July 2012 to November 2015. 39 patients with VS had been operated on with microsurgical technique via retro-sigmoid approach. 2 micro-Thuliumfiber hand-held flexible laser was used for tumor resection in 39 cases. Facial nerves function by House-Brackmann (HB) scale and hearing state were assessed preoperatively and 1 week and 6-month postoperatively. Results: Overall time of surgery changed only in proportion with the size of tumor (185-575 minutes) and was not affected by the use of laser. In 5out of 39cases, preoperative facial nerve palsy HB2, and in one case HB4 (permanent) was observed. On considering 38 cases, at 6-month follow-up facial nerve preservation rate (HB1) was 92.1% (from May 2015 all patients had not postoperative facial palsy). Hearing preservation rate was possible in 12 out of 15 cases with previously acceptable preoperative hearing state (AAO-HNS A and B classes). The mean surgeon satisfaction rate of usefulness of this technic was 2.7 in a 0-3-scale Conclusions: A good functional outcome including facial nerve preservation and hearing preservation was obtained by micro-Thulium-fiber hand-held flexible laser microsurgery.

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Section: Discussionsupporting

confidence: 77%

“…The incidence rate of VS has been increased because of detection the small and early stage VS by routine use of MRI in approach to hearing disturbance [15,[31][32][33][34][35][36][37][38].…”

Section: Discussionmentioning

confidence: 99%

Vestibular Schwannomas Microsurgery Assisted by Flexible Hand-Held 2 micro-Thulium-Fiber Laser

Mastronardi

Cacciotti

Roperto

et al. 2016

Caspian.J.Neurol.Sci

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“…47 Satar et al 81 believe that facial nerve dysfunction following the middle cranial fossa approach is transient and that the long-term outcome is the same as with the other approaches. This approach may be poorly tolerated by the elderly, as extradural dissection of the adherent dura may be difficult.…”

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confidence: 99%

Surgery for vestibular schwannomas: a systematic review of complications by approach

Ansari

Terry

Cohen-Gadol

2012

FOC

260

216

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Object Various studies report outcomes of vestibular schwannoma (VS) surgery, but few studies have compared outcomes across the various approaches. The authors conducted a systematic review of the available data on VS surgery, comparing the different approaches and their associated complications. Methods MEDLINE searches were conducted to collect studies that reported information on patients undergoing VS surgery. The authors set inclusion criteria for such studies, including the availability of follow-up data for at least 3 months, inclusion of preoperative and postoperative audiometric data, intraoperative monitoring, and reporting of results using established and standardized metrics. Data were collected on hearing loss, facial nerve dysfunction, persistent postoperative headache, CSF leak, operative mortality, residual tumor, tumor recurrence, cranial nerve (CN) dysfunction involving nerves other than CN VII or VIII, and other neurological complications. The authors reviewed data from 35 studies pertaining to 5064 patients who had undergone VS surgery. Results The analyses for hearing loss and facial nerve dysfunction were stratified into the following tumor categories: intracanalicular (IC), size (extrameatal diameter) < 1.5 cm, size 1.5–3.0 cm, and size > 3.0 cm. The middle cranial fossa approach was found to be superior to the retrosigmoid approach for hearing preservation in patients with tumors < 1.5 cm (hearing loss in 43.6% vs 64.3%, p < 0.001). All other size categories showed no significant difference between middle cranial fossa and retrosigmoid approaches with respect to hearing loss. The retrosigmoid approach was associated with significantly less facial nerve dysfunction in patients with IC tumors than the middle cranial fossa method was; however, neither differed significantly from the translabyrinthine corridor (4%, 16.7%, 0%, respectively, p < 0.001). The middle cranial fossa approach differed significantly from the translabyrinthine approach for patients with tumors < 1.5 cm, whereas neither differed from the retrosigmoid approach (3.3%, 11.5%, and 7.2%, respectively, p = 0.001). The retrosigmoid approach involved less facial nerve dysfunction than the middle cranial fossa or translabyrinthine approaches for tumors 1.5–3.0 cm (6.1%, 17.3%, and 15.8%, respectively; p < 0.001). The retrosigmoid approach was also superior to the translabyrinthine approach for tumors > 3.0 cm (30.2% vs 42.5%, respectively, p < 0.001). Postoperative headache was significantly more likely after the retrosigmoid approach than after the translabyrinthine approach, but neither differed significantly from the middle cranial fossa approach (17.3%, 0%, and 8%, respectively; p < 0.001). The incidence of CSF leak was significantly greater after the retrosigmoid approach than after either the middle cranial fossa or translabyrinthine approaches (10.3%, 5.3%, 7.1%; p = 0.001). The incidences of residual tumor, mortality, major non-CN complications, residual tumor, tumor recurrence, and dysfunction of other cranial nerves were not significantly different across the approaches. Conclusions The middle cranial fossa approach seems safest for hearing preservation in patients with smaller tumors. Based on the data, the retrosigmoid approach seems to be the most versatile corridor for facial nerve preservation for most tumor sizes, but it is associated with a higher risk of postoperative pain and CSF fistula. The translabyrinthine approach is associated with complete hearing loss but may be useful for patients with large tumors and poor preoperative hearing.

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“…In experienced hands, complete tumor removal is achieved in 80 to 99% of the patients. [1][2][3][4][5] The major goal has become preservation of neural functions, in particular of facial nerve function and hearing, which are the most important predictors of the quality of life.…”

Section: Introductionmentioning

confidence: 99%

Surgery of vestibular schwannomas

Samii¹,

Samii²,

Gerganov³

2012

IJNS

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A B S T R A C TVestibular schwannomas (VS) are the most common tumors of the cerebellopontine angle (CPA). Their surgical management has reached high standards in the last decade. Treatment options for VS are microsurgical removal or Radiosurgery. The following three basic operative approaches are currently utilized: Retrosigmoid approach (RSA), translabyrinthine and middle fossa approach. The following article elaborates the operative technique by the senior author based on his vast experience of VS surgery formed over the last three decades; during which period he has operated more than 3500 of such patients

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Hearing preservation in patients undergoing vestibular schwannoma surgery: comparison of middle fossa and retrosigmoid approaches

Abstract: The results of this study have demonstrated a more favorable hearing outcome for patients with intracanalicular tumors and tumors extending up to 1 cm into the CPA that were removed via the MF when compared with the RS approach.

Cited by 125 publications

References 24 publications

Vestibular Schwannomas Microsurgery Assisted by Flexible Hand-Held 2 micro-Thulium-Fiber Laser

Vestibular Schwannomas Microsurgery Assisted by Flexible Hand-Held 2 micro-Thulium-Fiber Laser

Surgery for vestibular schwannomas: a systematic review of complications by approach

Surgery of vestibular schwannomas

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