Transmastoid approach for resurfacing the superior semicircular canal dehiscence with a dumpling structure

  • Ma X
  • Zeng R
  • Wang G
 et al. 
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Abstract

BACKGROUND: Superior semicircular canal dehiscence (SSCD) is gradually recognized by otologists in recent years. The patients with SSCD have a syndrome comprising a series of vestibular symptoms and hearing function disorders which can be cured by the operation. In this study, we evaluated the characteristics of patients with SSCD and determined the effectiveness of treating this syndrome by resurfacing the canal via the transmastoid approach using a dumpling structure.

METHODS: Patients with SSCD, confirmed by high-resolution computed tomography and hospitalized at Beijing Tongren Hospital between November 2009 and October 2012, were included in the study. All of the patients underwent the unilateral transmastoid approach for resurfacing the canal, and received regular follow-up after surgery. Data from preoperative medical records and postoperative follow-up were comparatively analyzed to evaluate the effect of surgery.

RESULTS: In total, 10 patients and 13 ears (three left ears, four right ears, three bilateral ears) were evaluated in the study, which included 7 men and 3 women. Different symptoms and distinctive manifestations of vestibular evoked myogenic potential were found in these patients. After surgery, 4 patients had complete resolution, 5 had partial resolution, and 1 patient, with bilateral SSCD, had aggravation. None of the patients suffered from serious complications such as sensorineural hearing loss, facial paralysis, cerebrospinal fluid leakage, or intracranial hypertension.

CONCLUSIONS: In patients with unilateral SSCD, resurfacing the canal via the transmastoid approach using a dumpling structure is an effective and safe technique. However, more consideration is needed for patients with bilateral SSCD.

Author-supplied keywords

  • Autophony
  • Pulsatile tinnitus
  • Resurfacing
  • Superior semicircular canal dehiscence
  • Surgical treatment
  • Transmastoid approach
  • Vestibular evoked myogenic potential

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Authors

  • Xiao Bo Ma

  • Rong Zeng

  • Guo Peng Wang

  • Shu Sheng Gong

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