Baldwin D L, King T T, Morrison A W
Department of Otolaryngology, London Hospital, Whitechapel.
J Laryngol Otol. 1990 Jun;104(6):463-7. doi: 10.1017/s0022215100112897.
An increasing number of patients with an acoustic neuroma present with useful hearing in the tumour ear. Surgical removal of these tumours via the posterior fossa route may enable preservation of the cochlear nerve and otic capsule without increasing the morbidity to the facial nerve. The results of treating 51 cases of acoustic neuroma via the posterior fossa is presented. Forty four tumours measured less than 20 mm in diameter in the cerebellopontine angle and surgery was undertaken with hearing preservation as a principle objective. In 26 cases, the cochlear nerve was preserved anatomically and post-operative hearing at levels better than mean pure tone threshold of 50 dB or 50 per cent speech discrimination was recorded in 14 patients. The preservation of hearing represents a worthwhile surgical goal in selected patients with an acoustic neuroma without increasing the operative morbidity.
越来越多的听神经瘤患者患侧耳仍有实用听力。经后颅窝入路手术切除这些肿瘤，可在不增加面神经发病率的情况下保留蜗神经和听囊。本文介绍了经后颅窝治疗51例听神经瘤的结果。44例肿瘤在小脑脑桥角直径小于20 mm，手术以保留听力为主要目标。26例患者蜗神经获得解剖学保留，14例患者术后听力水平优于平均纯音阈值50 dB或言语识别率50%。对于部分听神经瘤患者，保留听力是一个值得追求的手术目标，且不会增加手术发病率。
