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RESULTS OF ACOUSTIC NEUROMA SURGERY: Middle Cranial Fossa Approach and Translabyrin Thinetranstentorial Approach via Middle Cranial Fossa Jin Kanzaki 1 pp.623-632
Published Date 1980/9/20
DOI https://doi.org/10.11477/mf.1492209124

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  • Abstract
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 Results of thirty two cases of acoustic neuroma in the past three and a half years operated on through the middle cranial fossa (mcf) approach, the extended middle cranial fossa and translabyrinthine-transtentorial (TL-TT) approach via mcf by a team of neuro-otologists and neurosurgeons were reported.

 1. Up to present, there was no death, irrespectively of the surgical approaches and of the size of the tumor.

 2. Preservation of hearing was possible in 50% of the cases operated on by the mcf approach.

 3. Total tumor removal was accomplished in 85%, and it was done in all cases by the mcf and its extended method.

 4. The facial nerve was preserved in 75% of the cases operated on by the mcf approach and by its extended method, and in 50% of cases operated on by the TL-TT approach via mcf.

 5. CSF leak and meningitis were the main non-fatal post-operative complications in early cases, but these occurred in less than 10%.

 For larger tumors the TL-TT approach via mcf have the advantage in which both neuro-otologists and neurosurgeons can proceed the operation in the same operative field in contrast with the translabyrinthine approach in which the neurosurgeon finds it difficult to work in the same operative field. Mastoidectomy and labyrinthectomy can be done more easily and in a short time via the mcf than via the mastoid, as in usual labyrinthectomy. By using the mcf approach and its extended approach, tumors of any size could be removed in the one-stage procedure with low postoperative mortality and non-fatal complication rate.


Copyright © 1980, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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