Superior semicircular canal dehiscence in relation to the superior petrosal sinus: a potential cause of pulsatile tinnitus. Issue 9 (September 2015)

• Record Type: Journal Article
• Authors: Liu, Z.; Bi, W.; Li, J.; Li, Q.; Dong, C.; Zhao, P.; Lv, H.; Wang, Z.
• Is Part Of: Clinical radiology. Volume 70:Issue 9(2015)
• Page Start: 943
• Page End: 947
• Publication Date: 2015-09
• Subjects: Medical radiology -- Periodicals; Radiotherapy -- Periodicals; Radiotherapy -- Periodicals; Radiology -- Periodicals; Societies, Medical -- Periodicals; Medical radiology; Radiotherapy; Electronic journals; Periodicals; 616.0757
• DOI: 10.1016/j.crad.2015.04.017
• Languages: English
• ISSNs: 0009-9260

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title> <x xml:space="preserve">Abstract</x> </title> <sec> <title id="sectitle0010">Aim</title> <p id="abspara0010">To examine the association between superior semicircular canal dehiscence (SSCD) and pulsatile tinnitus (PT).</p> </sec> <sec> <title id="sectitle0015">Materials and methods</title> <p id="abspara0015">Two SSCD groups included 408 unilateral persistent PT patients, and 511 controls undergoing head and neck dual-phase contrast-enhanced computed tomography (DP-CECT) for reasons other than PT. The prevalence of type I (no the superior petrosal sinus running through the dehiscence) and type II (superior semicircular canal dehiscence in relation to the superior petrosal sinus) SSCD was analysed using chi-square test.</p> </sec> <sec> <title id="sectitle0020">Results</title> <p id="abspara0020">SSCD was identified in 5.1% (21/408) of PT ears, significantly different from 2% (8/408) of non-PT ears and 0.7% (7/1022) of controls. There was no significant difference in SSCD prevalence between non-PT ears in the PT group and controls. In the PT group, 15/21 ears were type II SSCD; 6/21 ears were type I. Fifteen combined non-PT and control ears with SSCD included two type II and 13 type I SSCD. The prevalence of type II SSCD in PT ears was significantly higher than that of non-PT ears in both groups, and the prevalence of type I SSCD in PT ears was similar to that of non-PT ears in both groups.</p> </sec> <sec> <title id="sectitle0025">Conclusion</title> <p id="abspara0025">Compared with type I SSCD, there may be a causal relationship between type II SSCD and PT.</p> </sec> </abstract>