温度性刺激眼振反応が殆んど正常にみられた聴神経腫瘍例の検討 (メニエ-ル病の研究-6-<特集>)

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A 53-year-old woman noted hearing difficulty on telephoning, and her mean pure tone average scores for 2, 000, 4, 000 and 8, 000Hz were 65dB in the left ear. There was no balance disturbance, and the caloric reaction remained within normal ranges. In impedance measurement, the normal uncrossed and crossed reflex thresholds on both ears (Jerger, S. et al., 1977) were observed, and only the reflex decay on left contralateral stimulation was abnormal.A tumor with a diameter of 2cm was visible to the naked eye away from the internal acoustic meatus in the left-sided cerebellar-pontine angle. From the neurootological signs, the tumor seemed to have originated in the inferior vestibular nerve (Ylikoski, J. et al., 1978)
耳鼻咽喉科臨床学会の論文

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