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CLINICAL STUDY ON THE CHRONIC ARACHNOIDITIS IN THE POSTERIOR FOSSA Kunihiko Ebina 1,2 , Shigeharu Suzuki 1 , Takashi Iwabuchi 1 1The Department of Neurosurgery, Hirosaki University School of Medicine pp.853-860
Published Date 1975/8/1
DOI https://doi.org/10.11477/mf.1406203754
  • Abstract
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In this paper, clinical study on 12 cases of chronicarachnoiditis in the posterior fossa is reported.

Six patients were operated on. Three cases dis-closed cystic formation, two cases exhibited thicken-ing and adhesion of the arachnoid membrane, andthe other had both changes in the lesion.

In all of them, the surgical removal of the cystsor detachment of arachnoiditis adhetive producedexcellent improvement.

On the other hand, Six nonoperative cases im-proved significantly and quickly after lumbar airinsuffiation for examination.

In this study, we discuss several points in theclinical manifestation, diagnosis, and therapeuticprocedure from our 12 cases.

1) Patients occasionally had postanamnesis of headtrauma, chronic suppurative infection, such as otitismedia, sinuitis et al.

2) The course of this disease was charachterizedby its sudden occurence and intermittent symptoms.

3) Adjacent cranial nerve involvement, especiallyin the cerebellopontine angle cranial nerves, dis-closed the variety and bilaterality of lesion. Re-markably, disturbance of bilateral vestibular andcochlear nerves were found in eleven cases out oftwelve.

4) In the oto-neurological examination, peripheralvestibular disorder and retrocochlear disturbancewere found commonly in our cases. Markedly, thecaloric test revealed canal paresis (CP) on the moreimpaired side, but there were no cases with noresponse.

5) Skull X-ray studies did not disclose any findingsof dilation or destruction of the internal meatus.

6) Pneumoencephalo-tomography was found to beof significant diagnostic value to detail the finechanges in this lesion.

7) Occasionally, the symptoms were relieved inthe course of pneumoencephalographic studies. Theevidence convinced us of the probability of arach-noiditis chronica in the patient.


Copyright © 1975, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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