耳硬化症に関する臨床的観察

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During the three year period from Jan. 1958 to Dec. 1960, we examined 21 cases diagnosed as otosclerosis in our department. Though we lacked histological observations for these cases, we were able to confirm the otosclerotic foci at and near the oval window under otoscopic direct vision at the time of fenestration and stapes mobilization. Incidence and sex incidence of otosclerosis in Japan differ from those in Europe and America, but age at onset, audiogram and other clinical signs and symptoms show no marked differences. Our present study concerned primarily with the operative and postoperative observations of fen- estration and stapes mobilization. As for the newly developed other operative methods, we look forward for the next occasion.

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