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Superior semicircular canal dehiscence in relation with the superior petrosal sinus: our experience, surgical management and systematic review of literature

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

Purpose

Most of Superior Semicircular Canal Dehiscence (SSCD) are located in the apical region of the SSC. However, in a small number of cases, it may be situated in the medial wall, causing the SSC to contact with the superior petrosal sinus (SPS). The aim of this study is to describe four patients with SSCD involving the superior petrosal sinus (SSCD-SPS) and to perform a review of the literature.

Methods

Observational retrospective study of patients diagnosed of SSCD-SPS in a tertiary referral center. A systematic review was made, identifying 7 articles in the literature. Clinical presentation, complementary test (pure-tone audiometry, PTA; vestibular evoked myogenic potential, VEMP; computed tomography, CT), therapeutic management and outcomes were reported.

Results

Four new cases of SSCD-SPS are reported, in three of them a transmastoid plugging was performed. 54 patients with SSCD-SPS (57 dehiscences) were reported in the literature. The most frequent symptoms were aural pressure (57.41%) and vertigo provoked by pressure/Valsalva (55.55%). Conductive hearing loss was the most common finding in PTA (47.37%). Abnormally low thresholds were observed in 59.46% of reported VEMP. Transmastoid approach was used in ten cases, middle fossa approach in four, round window reinforcement in one, and occlusion of the SPS using coils in two.

Conclusions

Within SSCD, we have encountered a rare subtype characterized by its medial wall location in close proximity to the SPS. This subgroup needs special consideration as it has shown its own distinct characteristics. Regarding therapeutic management, we advocate a transmastoid approach.

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Authors and Affiliations

  1. Department of Otolaryngology–Head and Neck Surgery, Hospital General Universitario Gregorio Marañón., C/ Doctor Esquerdo, 46, 28007, Madrid, Spain

    Monica Rueda Vega, Carolina López Granados, Ignacio Arístegui Torrano & Miguel Arístegui Ruiz

  2. Department of Otolaryngology–Head and Neck Surgery, Hospital Universitario de Getafe, Getafe, Madrid, Spain

    Eduardo Martín Sanz

Authors
  1. Monica Rueda Vega
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  2. Carolina López Granados
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  3. Ignacio Arístegui Torrano
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  4. Eduardo Martín Sanz
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  5. Miguel Arístegui Ruiz
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Correspondence to Monica Rueda Vega.

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Rueda Vega, M., López Granados, C., Arístegui Torrano, I. et al. Superior semicircular canal dehiscence in relation with the superior petrosal sinus: our experience, surgical management and systematic review of literature. Eur Arch Otorhinolaryngol (2024). https://doi.org/10.1007/s00405-024-08682-1

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