Imaging Prevalence of Sigmoid Sinus Dehiscence among Patients with and without Pulsatile Tinnitus

Author:

Schoeff Stephen1,Nicholas Brian2,Mukherjee Sugoto3,Kesser Bradley W.1

Affiliation:

1. Department of Otolaryngology–Head and Neck Surgery, University of Virginia, Charlottesville, Virginia, USA

2. Department of Otolaryngology, SUNY Upstate Medical University, Syracuse, New York, USA

3. Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, USA

Abstract

Objective Define the radiographic prevalence of sigmoid sinus diverticulum or dehiscence (SSDD) in patients with and without pulsatile tinnitus (PT). Study Design Case series with chart review. Setting Tertiary care university medical center. Subjects Patients imaged between January 1, 2003, and December 31, 2012. Methods Two groups were evaluated for SSDD. The first (“PT”) included patients whose radiology report indicated a clinical history of PT (n = 37 symptomatic ears in 30 patients). The second (“non-PT”) included all patients undergoing temporal bone high resolution CT (HRCT) between November 2011 and November 2012 (n = 308 ears in 164 patients) for reasons other than pulsatile tinnitus. Primary outcome measure was the radiographic presence of SSDD. Covariates including age, gender, body mass index (BMI), and audiometric data were analyzed by independent t tests and Fisher’s exact test. Results Within the PT group, SSDD was identified in 24% of ears (9/37) and 23% of patients (7/30); all SSDD patients were female ( P = .024). Patients with SSDD were significantly younger ( P = .037). SSDD more frequently caused objective tinnitus ( P = .016). There was no difference in average BMI between those with and those without SSDD. In the non-PT group, SSDD was identified in 2 (both female) of 164 patients (1.2%; 0.6% of ears). The difference in SSDD prevalence between groups was significant ( P < .0001). Conclusions The prevalence of SSDD in patients with PT was 23%. Among patients with PT, those with SSDD were younger, exclusively female, and presented with objective tinnitus. The prevalence of SSDD among asymptomatic patients in 1 year was 1.2%.

Publisher

SAGE Publications

Subject

Otorhinolaryngology,Surgery

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