Abstract
Purpose
This aimed to evaluate the prevalence and extent of bilateral sigmoid sinus dehiscence (SSD) and to explore the presence of idiopathic intracranial hypertension (IIH) in patients with unilateral pulsatile tinnitus (PT) with CTA/V.
Methods
Sixty PT patients (52 females; 40.4 ± 11.6 years [20–72]) who underwent CTA/V and 30 non-PT patients (27 females; 38.4 ± 14.7 years [12–62]) were enrolled in this study. The primary outcome measure was the radiographic presence of SSD. The index of transverse sinus stenosis (ITSS) was obtained by multiplying the stenosis scale values for each transverse sinus, and once was ≥ 4, the presence of IIH was suspected.
Results
The prevalence and extent of SSD on symptomatic side (78%; maximum transverse diameter, MTD 0.49 ± 0.23; maximum vertical diameter, MVD 0.50 ± 0.26 cm) were significantly higher and larger than those on asymptomatic side (50%, P < 0.001; MTD 0.35 ± 0.18, P = 0.006; MVD 0.30 ± 0.15 cm, P < 0.001) in the study group and those (20%, P < 0.001; MTD 0.36 ± 0.18, P = 0.073; MVD 0.30 ± 0.22 cm, P < 0.048) in the control group. The presence of SSD showed significant correlation with both PT (logistic regression analysis, OR 4.167 [1.450–11.97]; P = 0.008) and suspected IIH (OR 16.25 [1.893–139.5]; P = 0.011).
Conclusion
In PT patients, SSD has a significant correlation with PT and a potential correlation with IIH.
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Xu, S., Ruan, S., Liu, S. et al. CTA/V detection of bilateral sigmoid sinus dehiscence and suspected idiopathic intracranial hypertension in unilateral pulsatile tinnitus. Neuroradiology 60, 365–372 (2018). https://doi.org/10.1007/s00234-018-1987-3
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DOI: https://doi.org/10.1007/s00234-018-1987-3