Retrocochlear mass lesion in mid-frequency sudden deafness

This study retrospectively reviewed all cases of mid-frequency sudden deafness to understand the clinical significance of this hallmark finding. Retrospective study. From 1992 to 2006, a total of 556 patients with sudden deafness were experienced. Based on the audiographic configuration, these patie...

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Bibliographic Details
Published in:Otolaryngology-head and neck surgery 2008, Vol.138 (1), p.13-17
Main Authors: Lin, Yi-Tsen, Young, Yi-Ho
Format: Article
Language:English
Subjects:
Adolescent
Adult
Audiometry, Pure-Tone
Cranial Nerve Neoplasms - complications
Cranial Nerve Neoplasms - diagnosis
Diagnosis, Differential
Female
Follow-Up Studies
Hearing Loss, Sudden - diagnosis
Hearing Loss, Sudden - etiology
Hearing Loss, Sudden - physiopathology
Humans
Magnetic Resonance Imaging
Male
Middle Aged
Retrospective Studies
Severity of Illness Index
Vestibulocochlear Nerve Diseases - complications
Vestibulocochlear Nerve Diseases - diagnosis
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Summary:This study retrospectively reviewed all cases of mid-frequency sudden deafness to understand the clinical significance of this hallmark finding. Retrospective study. From 1992 to 2006, a total of 556 patients with sudden deafness were experienced. Based on the audiographic configuration, these patients were classified into: flat-type group, 272 cases; high-frequency group, 146 cases; low-frequency group, 70 cases; mid-frequency group, 30 cases; and unclassified group, 38 cases. All patients underwent a battery of audiovestibular function testing. Among 556 sudden deafness patients, 17 patients (3%) were proved to have a retrocochlear tumor, including mid-frequency group (10), high-frequency group (4), flat-type group (2), and low-frequency group (1). Thus, the mid-frequency group had significantly higher (33%) association with a retrocochlear tumor than other groups. One-third of the patients with mid-frequency sudden deafness harbor a true retrocochlear mass lesion; hence, MR imaging is mandatory in such cases.
ISSN:0194-5998
1097-6817
DOI:10.1016/j.otohns.2007.10.008