Martinez Devesa P M, Wareing M J, Moffat D A
Department of Otolaryngology and Skull Base Surgery, Addenbrooke's Hospital, Cambridge, UK.
J Laryngol Otol. 2001 Jan;115(1):48-9. doi: 10.1258/0022215011906777.
A case is presented of an entirely intracanalicular meningioma in a 48-year-old woman that was excised via a conventional translabyrinthine approach to the internal auditory canal (IAC). Pre-operative magnetic resonance imaging (MRI) suggested that the tumour was a vestibular schwannoma (VS). Histological examination confirmed the intra-operative impression that the tumour was a meningioma. Although VS is by far the commonest intracanalicular tumour, the differential diagnosis includes meningioma. MRI is unable to distinguish between these two entities when the tumour is located entirely in the internal auditory canal.
本文报道了一例48岁女性的完全位于内听道内的脑膜瘤病例，该肿瘤通过传统的经迷路入路至内听道（IAC）切除。术前磁共振成像（MRI）提示肿瘤为前庭神经鞘瘤（VS）。组织学检查证实了术中的判断，即肿瘤为脑膜瘤。虽然VS是迄今为止最常见的内听道内肿瘤，但鉴别诊断包括脑膜瘤。当肿瘤完全位于内听道时，MRI无法区分这两种病变。
