Abstract
目的 探索CT在术前确诊颈交感神经鞘瘤(SSN)与迷走神经鞘瘤(SVN)的价值.方法搜集经手术探查摘除及病理检查证实并有术前CT资料的45例SSN与14例SVN,分析在CT轴面上SSN或SVN与颈总、内动脉及颈内静脉的不同位置关系.结果 45例SSN的颈动脉皆移位于肿瘤的外半周,其中43例位于颈动脉分叉(或)以上颈部者,其动、静脉皆紧贴肿瘤,显示的35例颈内静脉也皆移位于肿瘤的外半周;另2例SSN位于颈根部者,其动、静脉不紧贴肿瘤.SVN中2例由于扫描层面不足导致颈内静脉显示不清外,其余12例SVN皆将颈总颈内(或无名)动脉与(颈内或无名)静脉撑开,动脉位于肿瘤内半周,静脉位于肿瘤外半周,两者在弧形线上呈90°～180°.结论发生SSN或SVN后CT仍能准确反映颈交感神经或迷走神经与颈总(内)动脉及颈内静脉等原有的解剖定位关系.故CT是很有价值的术前确诊SSN或SVN的工具。
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