Prevalence of Radiographic Cochlear-Facial Nerve Dehiscence

被引:15
作者
Song, Yohan [1 ]
Alyono, Jennifer C. [1 ]
Bartholomew, Ryan A. [2 ]
Vaisbuch, Yona [1 ]
Corrales, Carleton Eduardo [2 ]
Blevins, Nikolas H. [1 ]
机构
[1] Stanford Univ, Div Otol & Neurotol, Dept Otolaryngol Head & Neck Surg, Sch Med, 801 Welch Rd,2nd Floor, Stanford, CA 94305 USA
[2] Harvard Med Sch, Div Otolaryngol Head & Neck Surg, Brigham & Womens Hosp, Boston, MA USA
基金
美国国家卫生研究院;
关键词
Dehiscence; Temporal bone radiology; Third window; SEMICIRCULAR CANAL DEHISCENCE; INNER-EAR; SUPERIOR; DISPLACEMENT; THICKNESS; EROSION;
D O I
10.1097/MAO.0000000000002015
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objective: To determine the prevalence of radiographic cochlear-facial nerve dehiscence (CFD). Study Design: Retrospective radiological study. Setting: Two tertiary-referral centers. Patients: Two hundred six temporal-bone computed tomography (CT) scans (405 total ears) of otology/neurotology patients from two academic institutions between the years 2014 and 2017. Intervention: Diagnostic. Main Outcome Measures: The cochlear-facial nerve partition width (CFPW) was measured on coronal CT sections and defined as the shortest distance between the cochlear basal turn and facial nerve (FN) labyrinthine segment. We used logistics regression analyses to determine positive predictors for radiographic evidence of CFD. Results: The overall prevalence of radiographic CFD was 5.4% (22/406 ears). 9.2% of patients (19/206) had CFD. Of these 19 patients, only one patient had mixed hearing loss that could not be explained by any other vestibular or auditory etiology. Three out of 206 patients had dehiscence in both ears (1.4%). The average CFPW was 0.6 +/- 0.2 mm, and fallopian canal width was 1.1 +/- 0.02 mm (n = 405). Older age, use of traditional CT scans, and thinner CT slice thickness were significant predictors for radiographic CFD. Conclusions: The radiographic prevalence of CFD is higher than what is reported in histologic studies, and may overestimate the true prevalence of CFD. The clinician should keep this in mind when considering this as potential cause for third-window symptoms.
引用
收藏
页码:1319 / 1325
页数:7
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