Nippon Jibiinkoka Gakkai Kaiho
Online ISSN : 1883-0854
Print ISSN : 0030-6622
ISSN-L : 0030-6622
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Volume 114, Issue 5
Displaying 1-6 of 6 articles from this issue
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Review article
Original article
  • Clinical Outcomes Cochlear Reimplantation
    Masaaki Ishikawa, Harukazu Hiraumi, Norio Yamamoto, Tatsunori Sakamoto ...
    2011 Volume 114 Issue 5 Pages 498-504
    Published: 2011
    Released on J-STAGE: September 10, 2011
    DOIhttps://doi.org/10.3950/jibiinkoka.114.498
    JOURNAL FREE ACCESS
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    To clarify the clinical features of cochlear reimplantation and surgical changes in auditory performance, we retrospectively reviewed 10 of 252 cochlear implantation surgeries-6 adults and 4 children-among 129 children and 123 adults done between April 1987 and May 2009. Mean duration from initial implantation to reimplantation was 50.3 months in children and 89 months in adults, most commonly due to hard failure and implant exposure/infection (33%) in children and to hard failure (75%) in adults. The initial device implanted was the Nucleus multichannel implant (CI22M, CI24M, or CI24R). The second implant in 7 was the same or an upgrade of the same manufacturer's device, and in 2 children the HiRes 90K (Hifocus 1j) and in 1 adult the Clarion 1.2.
    Full initial and reinsertion succeeded in 8 cases but reinsertion proved difficult in 2 due to severe intracochlear granulation and osteoneogenseis. Auditory performance analyzed in 7 cases was mostly equal to or better than before reimplantation, although differences were not statistically significant. Reinsertion is rarely difficult, but electrode choice is important in preparing for difficult reinsertion. Post reinsertion auditory performance is satisfactory with some exceptions.
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  • A Case Report on Cervical Neuroblastoma with Ataxia
    Nobuaki Kanemura, Tomoaki Nakano, Ayako Hirano, Hisao Amatsu, Naomi Ko ...
    2011 Volume 114 Issue 5 Pages 505-510
    Published: 2011
    Released on J-STAGE: September 10, 2011
    DOIhttps://doi.org/10.3950/jibiinkoka.114.505
    JOURNAL FREE ACCESS
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    We present a case of pediatric primary cervical neuroblastoma (NB), which is extremely rare. A 3-year-old girl with ataxia but no nasal obstruction, dysphagia, or stridor was diagnosed with cervical NB. Diagnostic results including clinical chemistry, full blood count, and serology, were normal. Ataxia worsened within a few days after onset and was not cured by steroids or intravenous immunoglobulin, delaying a definite diagnosis until a tumor was detected. Opsoclonus-myoclonus syndrome is typified by opsoclonus with myoclonus and ataxia, primarily associated with neuroblastoma. Brain stem cell and cerebellum dysfunction is thought to be due to an autoimmune mechanism. Following chemotherapy and selective neck dissection, the girl has had no recurrence or adverse sequelae. Ataxia disappeared during chemotherapy. We suggest that neuroblastoma should be considered in any child with unexpected by prolonged ataxia.
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Educational lecture
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