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KMID : 0361020170600070364
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Korean Journal of Otolaryngology - Head and Neck Surgery
2017 Volume.60 No. 7 p.364 ~ p.367
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A Case of Scala Vestibuli Cochlear Implantation in Tympanogenic Labyrinthitis Ossificans
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Lee Young-Su
Heo Jae-Hyung
Park Yong-Ho
Choi Jin-Woong
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Abstract
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Labyrinthitis ossificans (LO) is a pathologic formation of fibrosis and new bone within the lumen of the otic capsule. The LO is a challenging issue in cochlear implantation since obliteration and obstruction of the cochlea make electrode insertion through scala tympani (classic route) difficult. Moreover, tympanomastoidectomy for resolution of chronic otitis media is also simultaneously considered for tympanogenic LO with severe to profound hearing loss because ossification could progress in case of staged or delayed implantation after initial tympanomastoidectomy. We report a patient with tympanogenic LO, who received subtotal petrosectomy with simultaneous cochlear implantation via scala vestibuli instead of the scala tympani for hearing rehabilitation.
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KEYWORD
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Chronic otitis media, Cochlear implantation, Labyrinthitis ossificans, Scala vestibuli, Subtotal petrosectomy
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