Acta oto-laryngologica · 2026
Enlarged vestibular aqueduct concomitant with endolymphatic hydrops.
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Chen Po-Yu, Wang Yu-Fen, Young Yi-Ho
Аннотация
BACKGROUND: Enlarged vestibular aqueduct (EVA) is one of the most common inner ear anomalies associated with sensorineural hearing loss (SNHL) in childhood.
OBJECTIVE: This study aimed to investigate the prevalence of EH in patients with large vestibular aqueduct syndrome (LVAS).
METHODS: A total of 20 patients with congenital SNHL underwent an inner ear test battery aligned with Hydrops MRI. Among them, 7 patients (unilateral involvement in 2 and bilateral involvement in 5, totaling 12 ears) with LVAS were enrolled.
RESULTS: Abnormality rates across the inner ear test battery showed a significantly decreasing order, moving from audiometry (100%), cervical vestibular-evoked myogenic potential (VEMP) test (92%), caloric test (67%), to the ocular VEMP test (58%), which did not parallel with the declining trend of abnormality rate in Meniere's disease. Hydrops MRI demonstrated EH in 4 (57%) of 7 LVAS patients, comprising 5 ears in the cochlea and 4 ears in the vestibule. All patients received supportive treatment except one patient who underwent sac and shunt surgery, which resulted in profound deafness and recurrent postoperative vertigo.
CONCLUSION: Hydrops MRI enables the simultaneous identification of EVA and EH. In this study, 57% of LVAS patients were found to have concomitant EH.
OBJECTIVE: This study aimed to investigate the prevalence of EH in patients with large vestibular aqueduct syndrome (LVAS).
METHODS: A total of 20 patients with congenital SNHL underwent an inner ear test battery aligned with Hydrops MRI. Among them, 7 patients (unilateral involvement in 2 and bilateral involvement in 5, totaling 12 ears) with LVAS were enrolled.
RESULTS: Abnormality rates across the inner ear test battery showed a significantly decreasing order, moving from audiometry (100%), cervical vestibular-evoked myogenic potential (VEMP) test (92%), caloric test (67%), to the ocular VEMP test (58%), which did not parallel with the declining trend of abnormality rate in Meniere's disease. Hydrops MRI demonstrated EH in 4 (57%) of 7 LVAS patients, comprising 5 ears in the cochlea and 4 ears in the vestibule. All patients received supportive treatment except one patient who underwent sac and shunt surgery, which resulted in profound deafness and recurrent postoperative vertigo.
CONCLUSION: Hydrops MRI enables the simultaneous identification of EVA and EH. In this study, 57% of LVAS patients were found to have concomitant EH.