The vestibular aqueduct ossification on temporal bone CT: an old sign revisited to rule out the presence of endolymphatic hydrops in Menière's disease patients.

European Radiology
Jeanne MainnemarreMichael Eliezer

Abstract

Menière's disease (MD) is associated with endolymphatic hydrops (EH), which is an accumulation of excessive endolymphatic fluid in the inner ear. However, using temporal bone CT, lower visualization rates of the vestibular aqueduct (VA) in these patients have also been reported. In this retrospective single-center imaging study, we have included 25 healthy subjects and 47 patients having a definite, probable, or possible clinical diagnosis of MD that underwent temporal bone CT and inner ear MRI performed 4 h after contrast media administration. Two radiologists independently ranked the morphology of the VA in healthy subjects and in MD patients, using a three-level score (completely visible, discontinuous, and not visible). Each subject was then graded, based on both the VA's appearance and on EH presence. In healthy subjects, the VA was normal (grade 0) in 22/25 (88%) ears and discontinuous (grade I) in 3 healthy ears (12%). In the symptomatic ears of MD patients, we found 17/56 ears (30.3%) with VA grade 0, 15/56 ears (26.8%) with grade I, and 24/56 ears (42.8%) with grade II (p < 0.001). In MD patients, EH was observed in 46/94 ears (48.9%). A VA of grade 0 would eliminate the presence of EH with a negative predictive value ...Continue Reading

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Citations

Mar 2, 2021·Journal of Vestibular Research : Equilibrium & Orientation·Michael EliezerCharlotte Hautefort
Apr 27, 2021·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Shinji NaganawaMichihiko Sone
Nov 13, 2021·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Desiree GrosserAnja Giesemann
Jan 22, 2022·Expert Review of Neurotherapeutics·Sulin ZhangWeijia Kong

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