Any information contained in this pdf file is automatically generated from digital material submitted to EPOS by third parties in the form of scientific presentations. References to any names, marks, products, or services of third parties or hypertext links to third-party sites or information are provided solely as a convenience to you and do not in any way constitute or imply ECR’s endorsement, sponsorship or recommendation of the third party, information, product or service. ECR is not responsible for the content of these pages and does not make any representations regarding the content or accuracy of material in this file. As per copyright regulations, any unauthorised use of the material or parts thereof as well as commercial reproduction or multiple distribution by any traditional or electronically based reproduction/publication method ist strictly prohibited. You agree to defend, indemnify, and hold ECR harmless from and against any and all claims, damages, costs, and expenses, including attorneys’ fees, arising from or related to your use of these pages. Please note: Links to movies, ppt slideshows and any other multimedia files are not available in the pdf version of presentations. www.myESR.org Purpose Cochlear aqueduct (CA) is a bony canal surrounding the perilymphatic duct, located within the temporal bone, between the basal turn of the cochlea and the posterior cranial fossa. Although its exact function and importance is still unknown, it is thought to maintain the fluid and pressure balance within the inner ear by connecting the perilymph of the scala tympani with the cerebrospinal fluid of the posterior fossa. Previous histopathological studies have demonstrated that in meningitis the CA is the pathway for the spread of infection from the meninges to the labyrinth. However it has not been clarified why most patients who had meningitis have no hearing deficit whereas some develop postmeningitic sensorineural hearing loss (SNHL).
