Σφακιανάκης Αλέξανδρος
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Τρίτη 15 Μαΐου 2018

Cochlear obliteration following a translabyrinthine approach and its implications in cochlear implantation.

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Cochlear obliteration following a translabyrinthine approach and its implications in cochlear implantation.

Acta Otorhinolaryngol Ital. 2018 Feb;38(1):56-60

Authors: Delgado-Vargas B, Medina M, Polo R, Lloris A, Vaca M, Pérez C, Cordero A, Cobeta I

Abstract
SUMMARY: The most frequent sequelae following a translabyrinthine approach for vestibular schwannoma resection is complete hearing loss on the affected side. Such patients could benefit from a cochlear implant, provided that two essential requisites are met before surgery: a preserved cochlear nerve and a patent cochlea to accommodate the electrode array. The goal of our study is to determine the prevalence and extent of cochlear ossification following a translabyrinthine approach. Postoperative MRI of 41 patients were retrospectively reviewed. Patients were classified according to the degree of cochlear obliteration into three groups (patent cochlea, partially obliterated cochlea and totally obliterated cochlea). The interval between surgery and the first MRI was studied as well as its relationship with the rate of cochlear ossification. At first postoperative MRI (mean interval of 20 months), 78% of patients showed some degree of cochlear ossification. Differences were found in the time interval between surgery and first MRI for each group, showing a smaller interval of time the patent cochlea group (p > 0.05). When MRI was performed before the first year after surgery, a larger rate of patent cochlea was found (p > 0.05). The present study suggests that cochlear ossification is a time-depending process, whose grounds are still to be defined.

PMID: 29756611 [PubMed - in process]



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