枕下三角内有椎动脉及肌支，椎静脉丛和颈1神经。
The structure in the triangle was the vertebral artery, muscular branches, vertebral venous plexus and C1 nerve.
结论枕下乙状窦后经内听道入路的听神经显微手术，能够取得较好的肿瘤全切除率和面听神经功能保留率。
Conclusion Undergoing retrosigmoid approach one can succeed to get hign rate of total acoustic neuroma removal, facial and hearing preservation.
结论枕下乙状窦后经内听道入路的听神经显微手术，能够取得较好的肿瘤全切除率和面听神经功能保留率。
Conclusion Undergoing retrosigmoid approach one can succeed to get hign rate of total acoustic neuroma removal, facial and hearing preservation.
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