Cochlear-Internal Canal and Cochlear-Facial Dehiscence: A Novel Entity

Abstract

Different types of otic capsule dehiscence restricted to the cochlea have been described. Here we describe the case of a patient with a cochlear-internal auditory canal dehiscence associated with a cochlear-facial dehiscence not reported before. A 53-year-old patient with severe to profound sensorineural hearing loss due to bilateral Meniere's disease underwent a cochlear implant surgery on the right ear. Preoperative brain magnetic resonance imaging findings were reported to be normal; during surgery, a cerebrospinal fluid gusher occurred at the time of round window opening. Postoperative computed tomography imaging showed a bony dehiscence at two levels of the otic capsule.

Cochlear Implantation in Meniere's Disease: A Systematic Review and Meta‐Analysis

“…Of 37 studies included, 32 (86.5%) studies were full manuscripts [8][9][10][11][12][13] and five (13.5%) were conference abstracts. [43][44][45][46][47] 21 (56.8%) papers were case series (more than one patient), [19][20][21][22][25][26][27][28][29][30]36,37,40,[43][44][45][46][47] 11 (29.7%) were case reports (one patient), 23,24,[30][31][32][33][34][35]38,39,41,42 and five (13.5%) were case-control studies (one or more comparison groups). [8][9][10][11][12] Twenty-five (67.6%) studies were based internationally and 12 (32.4%) studies were based in the United States (Table I).…”

Severe and persistent facial nerve stimulation after cochlear implantation in a patient with cochlear–facial dehiscence: a case report

“…6 CFD has been reported in very few cases. [6][7][8][9][10] Fang et al 9 reported three cases of CFD and cochlear implantation, two of whom presented with FNS and one did not. Both patients with FNS obtained good postoperative hearing rehabilitation results by adjusting the coding strategy.…”

“…6 CFD has been reported in very few cases. 6–10 Fang et al. 9 reported three cases of CFD and cochlear implantation, two of whom presented with FNS and one did not.…”

“…Both patients with FNS obtained good postoperative hearing rehabilitation results by adjusting the coding strategy. Garaycochea et al 8 reported a case with two dehiscences in an otic capsule (cochlear-internal canal and CFD). No FNS was found in this patient, who underwent cochlear implantation.…”

“…Garaycochea et al. 8 reported a case with two dehiscences in an otic capsule (cochlear–internal canal and CFD). No FNS was found in this patient, who underwent cochlear implantation.…”