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Updated: Jun 27, 2026

Intrathecal Application of a Fluorescent Dye for the Identification of Cerebrospinal Fluid Leaks in Cochlear Malformation
Published on: February 29, 2020
Recurrent bacterial meningitis after cochlear implantation in a patient with a newly described labyrinthine
Attila Torkos1, Jeno Czigner, János Jarabin
1Department of Otorhinolaryngology and Head and Neck Surgery, University of Szeged, Tisza Lajos krt. 111, Szeged 6725, Hungary. a.torkos@orl.szote.u-szeged.hu
Abstract:
Authors report on a so far undescribed bilateral inner ear malformation with congenital deafness where a defect of both the medial and lateral bony labyrinthine wall allowed the herniation of a cerebrospinal fluid-filled endosteum sac into the tympanic cavity. The story of cochlear implantation in this ear and the series of following meningitis demonstrates the dilemma of indicating implantation in labyrinthine dysplasia and the difficulties of treating postimplantation meningitis. Routes of bacterial invasion from inner ear to intracranium is discussed regarding normal, dysplastic and surgically "disturbed" inner ear anatomy.
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