PMID: 11314724Apr 21, 2001Paper

Brainstem response in cerebellopontine angle tumors

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
N MarangosR Laszig

Abstract

To evaluate the auditory brainstem response (ABR) findings in cerebellopontine angle (CPA) tumors and focus on those with normal ABR results. This was a retrospective evaluation of ABR findings. All subjects with diagnosed CPA tumors who were referred for treatment were included. All 309 patients with radiographically confirmed (computed tomography or magnetic resonance imaging [MRI]) CPA tumors (153 before 1993 and 156 after 1993). All patients underwent complete audiologic examination, electronystagmography, ABR testing, and ipsilateral transtympanic electrocochleography. All tumors were histologically confirmed. The patients were categorized according to ABR results (normal or pathologic findings or no response); according to histology (vestibular schwannomas or meningiomas); and according to tumor size by MRI (small, up to 15 mm; medium, 16-25 mm; large, 26-40 mm; and very large, over 40 mm). Normal ABR results were found in 18.4%; pathologic ABR results in 31.4%; and no response in 50.2%. Small vestibular schwannomas (under 15 mm) showed a higher incidence of normal ABR results (41.7%). CPA tumors with normal ABR results (n = 57) caused no hearing loss (n = 12), symmetrical hearing loss (n = 11), or ipsilateral hearing los...Continue Reading

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Citations

Apr 30, 2013·Clinical Neurology and Neurosurgery·J J WatervalJ J Manni
Jun 1, 2005·Audiology & Neuro-otology·Manuel DonRalph Nelson
Jan 22, 2013·American Journal of Otolaryngology·Paul D KoorsDaniel H Coelho
May 19, 2007·Annales d'oto-laryngologie et de chirurgie cervico faciale : bulletin de la Société d'oto-laryngologie des hôpitaux de Paris·A RaduR Maire
Apr 28, 2009·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Munetaka UshioTatsuya Yamasoba
Oct 24, 2002·Otolaryngologic Clinics of North America·W J MannN Marangos
Sep 9, 2004·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Krzysztof MorawskiFred F Telischi
Jul 9, 2008·Acta Oto-laryngologica·Alexis Bozorg GrayeliOlivier Sterkers
May 17, 2018·Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia·Bretislav GalErmis Vogazianos

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