Large vestibular aqueduct syndrome with high CT density and high MR signal intensity.
نویسندگان
چکیده
We report a case of large vestibular aqueduct syndrome with a markedly dilated endolymphatic sac bilaterally. The density and signal intensity of the extraosseous portion of the sac were higher than those of cerebrospinal fluid on CT and MR studies. The findings may represent protein-rich and hyperosmolar fluid within the endolymphatic sac.
منابع مشابه
Overlapping thin-section fast spin-echo MR of the large vestibular aqueduct syndrome.
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...
متن کاملEVALUATION OF ANATOMICAL VARIATIONS OF VESTIBULAR AQUEDUCT DIMENSIONS IN TEMPOR AL BONE CT SCAN
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. ...
متن کاملHigh-resolution MR imaging of enlarged eudolymphatic duct and sac syndrome using SD-FastASE: Volume and signal-intensity measurement of the endolymphatic duct and sac, and area measurement of the cochlear modiolus
INTRODUCTION: Large vestibular aqueduct syndrome, or enlarged endolymphatic duct (EED) and sac (EFS) syndrome, is an inner ear malformation which manifests itself as progressive sensorineural hearing loss starting in infancy or childhood. The deformity of the endolymphatic duct and sac is congenital: however, the hearing loss that develops in this syndrome is acquired. A characteristic feature ...
متن کاملComparison of 45° Oblique Reformats with Axial Reformats in CT Evaluation of the Vestibular Aqueduct
B. Ozgen M.E. Cunnane P.A. Caruso H.D. Curtin BACKGROUND AND PURPOSE: Measurement of the vestibular aqueduct on CT scans of the temporal bone is important for the detection of large vestibular aqueduct syndrome; typically this is done in the axial plane. We sought to determine the usefulness of reformats performed in the 45° oblique plane for evaluating the vestibular aqueduct. In addition, we ...
متن کاملSíndrome do aqueduto vestibular alargado: uma causa de disacusia neurossensorial***** The large vestibular aqueduct syndrome: a cause of neurosensory dysacusia
Background: the large vestibular aqueduct syndrome (LVAS) is characterized by the enlargement of the vestibular aqueduct associated with sensorioneural hearing loss. The level of hearing loss varies and may be fluctuant, progressive or sudden. Vestibular symptoms may be present. The diagnosis is reached by imaging methods. Aim: To report an LVAS case. Method: a female infant was submitted to a ...
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عنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 18 3 شماره
صفحات -
تاریخ انتشار 1997