Radiological factors related to pre-operative hearing levels in patients with vestibular schwannomas

Gerganov, Venelin; Nouri, Mohsen; Stieglitz, Lennart; Giordano, Mario; Samii, Madjid; Samii, Amir (2009). Radiological factors related to pre-operative hearing levels in patients with vestibular schwannomas. Journal of clinical neuroscience, 16(8), pp. 1009-12. Amsterdam: Elsevier 10.1016/j.jocn.2008.08.029

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The pathogenetic mechanism of hearing loss in patients with vestibular schwannomas (VS) remains unclear. Our aim was to determine the radiological and clinical parameters that might be related to hearing. The radiological images and charts of 99 patients were reviewed. Image processing software was used to analyse the maximal tumor diameter in three planes; its volume; its extension cranially, caudally, anteriorly and posteriorly; the width and length of the intrameatal tumor portion, its shape and consistency; and the tumor-fundus distance. These parameters were correlated with the patient's pre-operative hearing range. The degree of hearing correlated significantly with the tumor size, volume and coronal diameter, the degree of intrameatal tumor growth, and the distance between the lateral tumor end and the fundus (p < 0.05). No correlation was found regarding tumor extension, shape and consistency, the presence of hydrocephalus, or the extent of erosion of the internal auditory canal. Loss of hearing in the VS appears to be multifactorial. Determining the radiological parameters related to the hearing level can help to clarify the pathophysiological mechanisms involved.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurosurgery

UniBE Contributor:

Stieglitz, Lennart

ISSN:

0967-5868

Publisher:

Elsevier

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 15:13

Last Modified:

04 May 2014 23:23

Publisher DOI:

10.1016/j.jocn.2008.08.029

PubMed ID:

19428260

Web of Science ID:

000268608000004

URI:

https://boris.unibe.ch/id/eprint/32013 (FactScience: 196838)

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