MR detection of tumor in the internal auditory canal
نویسندگان
چکیده
منابع مشابه
MR of the normal and abnormal internal auditory canal.
MR performed with thin, contiguous sections has replaced CT for the study of the cerebellopontine angle and for diagnosis of acoustic neuromas. In our experience large acoustic neuromas are well seen in all pulse sequences. Tumors with small extracanalicular components are seen in the T1- and spin-density-weighted sequences whereas purely intracanalicular lesions are often visualized only in th...
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 کاملcavernous hemangioma of the internal auditory canal
cavernous hemangioma is a rare benign tumor of the internal auditory canal (iac) of which fourteen cases have been reported so far. tinnitus and progressive sensorineural hearing loss (snhl) are the chief complaints of the patients. audiological and radiological planes, ctscan, and magnetic resonance image (mri) studies are helpful in diagnosis. the only choice of treatment is surgery with elec...
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 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...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1987
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.148.6.1219