title: The effect of jugular bulb-vestibular aqueduct dehiscence on hearing and balance.
abstract: CONCLUSIONS
  This study suggests that jugular bulb-vestibular aqueduct dehiscence (JBVAD) does not affect the hearing or balance functions of the inner ear.
  
  
  OBJECTIVE
  Since JBVAD may cause impairment of the inner ear and induce hearing loss, tinnitus, and vertigo, this study was to investigate the effect of JBVAD on hearing and balance.
  
  
  METHODS
  Patients undergoing temporal bone computed tomography (TBCT) scans from May 2013 to December 2013 at a tertiary referral hospital were reviewed. The topographic relationship between the jugular bulb (JB) and the vestibular aqueduct was assessed. The findings were classified as normal when there was always a bony structure between the two structures and as dehiscent when the bony coverage separating the two structures was absent. Clinical data were collected via electronic records and clinical follow-up.
  
  
  RESULTS
  A total of 1313 out of 8325 patients were diagnosed with a HJB. Forty-six patients showed JBVAD. The prevalence of dehiscence was 0.6% in patients undergoing temporal bone CT scans and 3.5% in patients with HJB. Of the 46 patients with JBVAD, 23 (50%) had sensorineural hearing loss, three (6.5%) had tinnitus, and two (4.3%) had vertigo. The correlation between JBVAD and these clinical symptoms did not achieve statistical significance.
authors.affiliation: a 1 Department of Otolaryngology, Eye & ENT Hospital of Fudan University , Shanghai, PR China.|b 2 Key Laboratory of Hearing Medicine of National Health and Family Planning Commission , Shanghai, PR China.
authors.forename: Shufeng
authors.initials: S
authors.lastname: Li
authors.affiliation: a 1 Department of Otolaryngology, Eye & ENT Hospital of Fudan University , Shanghai, PR China.|b 2 Key Laboratory of Hearing Medicine of National Health and Family Planning Commission , Shanghai, PR China.
authors.forename: Na
authors.initials: N
authors.lastname: Shen
authors.affiliation: c 3 Department of Radiology, Eye & ENT Hospital of Fudan University , Shanghai, PR China.
authors.forename: Yushu
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: c 3 Department of Radiology, Eye & ENT Hospital of Fudan University , Shanghai, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Sha
authors.affiliation: a 1 Department of Otolaryngology, Eye & ENT Hospital of Fudan University , Shanghai, PR China.|b 2 Key Laboratory of Hearing Medicine of National Health and Family Planning Commission , Shanghai, PR China.
authors.forename: Zhengmin
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006309:Hearing / Q000502:physiology*; D006319:Hearing Loss, Sensorineural; D006320:Hearing Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012665:Semicircular Canals / Q000000981:diagnostic imaging; D013701:Temporal Bone / Q000000981:diagnostic imaging*; D014012:Tinnitus / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014057:Tomography, X-Ray Computed / Q000379:methods; D014717:Vertigo / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014723:Vestibular Aqueduct / Q000000981:diagnostic imaging* / Q000503:physiopathology; D055815:Young Adult
keywords: Computed tomography; JBVAD; Jugular bulb; dehiscence; dizziness; hearing; temporal bone; tinnitus; vertigo; vestibular aqueduct