颈部副神经节瘤的MR诊断
Journal of the Fourth Military Medical University（2008）
Abstract
目的:探讨颈部副神经节瘤的MR诊断价值.方法:回顾性分析34个肿块(32例患者)的部位、MR信号和邻近大血管移位等情况.结果:病变分别位于颈动脉体(27个,2例为双侧性)、迷走神经体(6个,上颈部4个,中、下颈部各1个)及左侧后颈部(1个).右侧颈部15个,左侧19个.肿瘤形态为不规则形、纺锤形或类圆形;信号欠均匀,MR平扫(22/34)及增强后(18/29)可见"盐和胡椒征".22个肿块行MRA检查,表现为颈总动脉分叉扩大(18个颈动脉体瘤)和颈动脉向前移位(4个迷走神经体瘤).2例恶性迷走神经体瘤颈部淋巴结转移,其中1例双肺转移.结论:根据肿瘤的部位、信号等MR表现,多数颈部副神经节瘤可在手术前正确诊断.
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Key words
carotid body,neck,vagus nerve,magnetic resonance imaging,paraganglioma
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