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脳脊髄液と迷路外リンパ液とは,Hyrtle,Schwalbe,Retzius,Weber-Liel,Siebenmann,Wittmaack,Kalefors,木畑,田中,三好,松本等に依る動物實驗的研究に依り,蝸牛殻導水管を通じ交流し得る事が實證され,Muller,Henle,Hyrtle,Krause,Karbowski,Lagally,Waltner,木畑,田中,松本等により,組織解剖學的に同管の細部構造も明らかにされるに至つて居る。斯くて其の生理機能の明確化と共に,最近耳鳴の療法としての氣腦法,難聽に對するSpinalpumpingの問題から本管の臨床上の意義が大となりつつある。
然乍斯くの如き腦脊髄腔と迷路外淋巴腔との直接の交通を實證し得た臨床症例の報告は未だ存在せざる模樣である。然るに今回我が教室に於て,Lempert氏迷路開窓術實施中,遇々蝸牛殻導水管開放を實證し得る症例に遭遇し、學説上,臨床上,貴重な症例と老えられる一例を經驗した故に茲に之を報告する次第である。
TANAKA reports a case in which he believes that there was a direct connection between the cerebrospinal space and that of the endolymphatics by open saccus endolymphaticus. This conclusion is derived from the fact that there was a continuous flow of cerebrospinal fluid from the window of fenestration operation performed after Lempert's method. That the labyrinthine opening was connected to the cerebrospinal space was shown by presence of bloody fluid discharge at the ear following an experimental spinal puncture and by determination of sulfa drug concentration in the discharge after the agent had been introduced intratheccally. The author believes that, by this case, the theory which was advanced by Hurtle, Kibata and Tanaka that maintained the presence of means of circulation in the cerebrospinal fluid and the endolymph is herewith clinically demonstrated.
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