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Challenges in Cerebrospinal Fluid Fistula with Contralateral Cochlear Implant in Incomplete Partition Type I: A Case Series
Published online by Cambridge University Press: 27 March 2026
Abstract
Objectives
Inner ear malformations, particularly incomplete partition type I, are well-recognised risk factors for cerebrospinal fluid leakage, which may result in recurrent meningitis.
Methods
We present a case series of three paediatric patients with incomplete partition type I malformation who experienced an intra-operative cerebrospinal fluid ‘gusher’ during cochlear implantation and subsequently developed meningitis due to contralateral cerebrospinal fluid leakage from a stapes footplate fistula. Detailed clinical assessments, radiological findings and surgical management are described.
Results
In all three cases, the initial suspicion of a cerebrospinal fluid fistula was directed towards the implanted ear. However, radiological evaluation and intra-operative findings confirmed a stapes footplate fistula in the non-implanted ear. Surgical closure was achieved using temporal fascia and fibrin glue. In one case, subtotal petrosectomy was required because of persistent cerebrospinal fluid leakage.
Conclusion
In patients with incomplete partition type I malformations undergoing cochlear implantation, contralateral cerebrospinal fluid fistula should be considered in the differential diagnosis of post-operative meningitis.
Information
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- Copyright
- © The Author(s), 2026. Published by Cambridge University Press on behalf of J.L.O. (1984) LIMITED.
Footnotes
Ergin Eroğlu takes responsibility for the integrity of the content of the paper
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