聴力正常な聴神経腫瘍症例に対する中頭蓋窩法摘出術

概要

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Results of acoustic neurinoma surgery via middle cranial fossa approach performed on 3 patients with normal hearing in the speech frequency range are reported. All of the patients had small (from 1.5 to 2.0 cm) neurinomas. Although the normal hearing and facial nerve function were preserved in 2 patients,1 patient had deafness in the operated side and severe facial palsy was observed postoperatively. Tumors in the patients with preserved hearing were soft and adhesion to cochlear and facial nerve were not observed, but the tumor was hard and tightly adhered to the cochlear and facial nerve in the patient with no hearing postoperatively.<BR>The significance of diagnosis in the early stage in acoustic neuroma and hearing preservation in acoustic neurinoma surgery are discussed.
耳鼻咽喉科臨床学会の論文