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目的评价内听道后壁磨除对于处理前庭神经鞘瘤内听道内肿瘤的效果。方法回顾性分析自2003年1月至2006年12月,经内听道入路连续显微手术治疗的103例前庭神经鞘瘤。结果术后CT显示部分内听道后壁磨除组从内听道底平均内听道后壁缩短至4.6mm±1.0mm(n=48);55例内听道后壁广泛磨除组,内听道后壁平均残留1.9mm±0.5mm(从内听道底起)。迷路的解剖位置位于S-F线外侧者52例,位于S-F线上者23例,位于S-F线内侧者28例。术后没有出现与手术有关的永久性并发症,死亡率为0%。结论显微内听道(IAM)后壁磨除在前庭神经鞘瘤切除过程中可提供更好的外科手术入路。
Objective To evaluate the effect of posterior wall ablation in treating auditory canal tumors in vestibular schwannoma. Methods From January 2003 to December 2006, 103 cases of vestibular schwannoma treated by continuous microsurgical treatment of internal auditory canal were retrospectively analyzed. Results Postoperative CT showed that the posterior wall of posterior wall was shortened to 4.6mm ± 1.0mm (n = 48) from the average posterior wall of auditory canal in 55 cases, The average posterior wall of the auditory canal remains 1.9mm ± 0.5mm (from the end of the auditory canal). Lost anatomical location is located outside the S-F line in 52 cases, located in the S-F line in 23 cases, located in the S-F line inside 28 cases. No postoperative complications related to surgery were found with a mortality rate of 0%. Conclusion Microsurgical internal auditory canal (IAM) posterior wall ablation provides a better surgical approach during resection of vestibular schwannoma.