Various dimensions of the human vestibular aqueduct were evaluated in two groups, patient and control, and these measurements were compared. Both groups were examined clinically, followed by audiometric evaluation and temporal bone high resolution CT scan. It was found that in approximately one third of the patient group (with idiopathic SNHL), the vestibular aqueduct was 1.5 mm or larger. ...

Keywords: enlarged endolymphatic duct and sac syndrome; sudden hearing loss; retrocochlear pattern Abstract: Enlarged Vestibular Aqueduct (EVA) is one inner ear malformation found in 35% of children with unilateral sensorineural hearing loss.(1) Case reports of late diagnosis of enlarged vestibular aqueduct in young adulthood are extremely rare. The authors present a case of unilateral sensorin...

The first description of large vestibular aqueduct (LVA) was by Carlo Mondini in 1791 from his dissection of the temporal bones of a boy born deaf (Mondini, 1791) Mondini not only described and drew the LVA which he measured at seven lines or about 15 mm wide, but he opened the voluminous endo-lymphatic sac which he found to be 'full of a rather viscous humour, clear and yellowish which obvious...

PURPOSE To evaluate a high-resolution, thin-section fast spin-echo MR imaging technique of the inner ear to identify the large vestibular aqueduct syndrome seen on temporal bone CT scans. METHODS We retrospectively reviewed the temporal bone CT scans of 21 patients with hearing loss and enlarged bony vestibular aqueducts by CT criteria. High-resolution fast spin-echo MR imaging was then perfo...

OBJECTIVE To characterize the appearance of the normal vestibular aqueduct on coronal computed tomography (CT). DESIGN Retrospective evaluation of routine CT images of the temporal bones. SETTING Private tertiary care center. PATIENTS Twenty-four children and young adults (14 females and 10 males), aged 2 to 24 years (average age, 10 years). MAIN OUTCOMES MEASURES Axial CT images were e...

Most of the patients who present with congenital sensorineural hearing loss (SNHL) do not demonstrate an imaging abnormality. Only 39% of patients with congenital SNHL have a documented imaging abnormality, with large vestibular aqueduct syndrome being the most common of the congenital anomalies to be identified on imaging. Congenital anomalies of the semicircular canals can result in SNHL. Dys...