Duplicated Internal Auditory Canal: High-Resolution CT and MRI Findings
نویسندگان
چکیده
منابع مشابه
A Challenge for Cochlear Implantation: Duplicated Internal Auditory Canal.
Duplication of the internal auditory canal is an uncommon, congenital malformation that can be associated with sensorineural hearing loss owing to aplasia/hypoplasia of the vestibulocochlear nerve. Only 14 such cases have been reported to date. We report the case of a 13-month-old girl with bilateral, congenital, sensorineural hearing loss caused by narrow, duplicated internal auditory canals a...
متن کاملPatulous internal auditory canal.
OBJECTIVE To investigate a rare anomaly of the internal auditory canal known as a patulous canal and its relationship to hearing impairment. METHODS High-resolution computed tomographic scans of the temporal bones of patients who presented between August 2001 and August 2002 were reviewed. The patients' medical charts were evaluated for age, sex, and hearing impairment, and the computed tomog...
متن کاملNontumorous Enlargement of the Internal Auditory Canal: A Risk Factor for Sensorineural Hearing Loss? A High Resolution CT-Study.
PURPOSE First aim of the study was to define normal shape and diameter of the internal auditory canal (IAC). In the second part the clinical relevance of IAC-enlargement was analyzed, considering also lesions of the subtle structures at the fundus of the internal auditory canal. MATERIALS AND METHODS 440 high resolution CT-scans of the temporal bone were used for retrospective analysis of the...
متن کاملCT Findings in the External Auditory Canal after Transcanal Surgery.
BACKGROUND AND PURPOSE Middle ear surgery is often performed through the external auditory canal, and the CT appearance of the external auditory canal after transcanal middle ear surgery can mimic erosive pathology such as carcinoma, external auditory canal cholesteatoma, or necrotizing external otitis. We reviewed the CT findings in a group of patients following transcanal surgery to highlight...
متن کاملHigh-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal.
PURPOSE To determine CT findings in the external, middle, and inner ear of patients with microtia and external auditory canal dysplasia. METHODS We used high-resolution CT, with multiplanar or axial 1-mm continuous sections, coronal or sagittal reformations, or low-dose spiral acquisitions, to examine 184 temporal bones of children with microtia. RESULTS In cases of minor microtia, auditory...
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ژورنال
عنوان ژورنال: Korean Journal of Radiology
سال: 2019
ISSN: 1229-6929,2005-8330
DOI: 10.3348/kjr.2018.0065