Komatsuzaki A, Tsunoda A
Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan.
J Laryngol Otol. 2001 May;115(5):376-9. doi: 10.1258/0022215011907910.
Two hundred and seventy-one Japanese patients who underwent surgical removal of neuroma from the cerebello-pontine angle using the translabyrinthine approach were retrospectively reviewed in order to investigate the nerve origin on an anatomical basis. In 269 out of the 271 cases, the origin of the neuromas was identified. Among these cases, 84.8 per cent of tumours originated from the inferior vestibular nerve (IVN), followed by the superior vestibular nerve (SVN) (8.9 per cent). Of the 5.6 per cent of tumours arising from the vestibular nerve, however, it could not be determined whether they originated from the SVN or IVN. Two cases of neuromas originating from the facial nerve were seen (0.7 per cent). No neuroma arose from the cochlear nerve. Currently, the diagnosis of acoustic neuromas is best made with Gd-enhanced magnetic resonance imaging (MRI). However, our data indicate that the development of a functional test of the individual IVN can be useful for screening most cases of acoustic neuroma and in facilitating their early diagnosis.
对271例采用经迷路入路手术切除桥小脑角神经瘤的日本患者进行回顾性研究，以便从解剖学角度研究神经起源。在271例病例中的269例中，确定了神经瘤的起源。在这些病例中，84.8%的肿瘤起源于前庭下神经（IVN），其次是前庭上神经（SVN）（8.9%）。然而，在起源于前庭神经的5.6%的肿瘤中，无法确定它们是起源于SVN还是IVN。发现2例神经瘤起源于面神经（0.7%）。没有神经瘤起源于蜗神经。目前，听神经瘤的诊断最好采用钆增强磁共振成像（MRI）。然而，我们的数据表明，开发针对个体IVN的功能测试对于筛查大多数听神经瘤病例并促进其早期诊断可能有用。
