Histopathologic Characteristics of Internal Auditory Canal Diverticula
نویسندگان
چکیده
منابع مشابه
Patulous 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 کاملDuplication anomaly of the internal auditory canal.
A 45-year-old man presented with slowly progressive left-sided hearing loss of 5 years duration. Examination revealed bilateral sensorineural hearing loss, more severe on the left, with poor speech discrimination on the left. Brainstem-evoked-response audiometry demonstrated borderline prolongation of interpeak latencies and poor early wave identification on the left side. A retrocochlear lesio...
متن کاملDumbbell schwannomas of the internal auditory canal.
BACKGROUND AND PURPOSE Benign tumors of the internal auditory canal (IAC) may leave the confines of the IAC fundus and extend into inner ear structures, forming a dumbbell-shaped lesion. It is important to differentiate dumbbell lesions, which include facial and vestibulocochlear schwannomas, from simple intracanalicular schwannomas, as surgical techniques and prognostic implications are affect...
متن کاملLipochoristoma of the internal auditory canal.
PROBLEM Approximately 90% of tumours of cerebellopontine angle and internal auditory canal are vestibular schwannomas (acoustic neuromas) and meningiomas. Lipochoristomas are rare benign masses that represent only 0.15% of cases. METHODOLOGY We report the case of a 39-year-old man who consulted us for right-sided hearing loss and tinnitus. RESULTS Tonal audiometry showed a down-sloping righ...
متن کاملLipochoristoma of the Internal Auditory Canal
Neoplasms arising within the internal acoustic canal (IAC) and cerebellopontine angle (CPA) are most commonly of neuroepithelial origin. Vestibular schwannoma represents the most common lesion in the IAC (80–90%) with meningiomas comprising nearly all the rest (10%) of IAC tumors.1–3 Rare tumors include epidermoids, lipochoristomas, and metastatic tumors. Each of these lesions has typical imagi...
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ژورنال
عنوان ژورنال: Otology & Neurotology
سال: 2019
ISSN: 1531-7129,1537-4505
DOI: 10.1097/mao.0000000000002256