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Rathke裂囊肿的MR表现 被引量:1

MR appearance of Rathke cleft cyst
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摘要 目的:通过总结分析27例Rathke裂囊肿病例的MR影像特征,以提高对该病的MR影像诊断认识。材料和方法:收集按MRI诊断标准诊断的Rathke裂囊肿的病例27例,有术后病理结果证实的11例,其中男15例,女12例,年龄2~79岁,平均35岁。临床表现:头痛、头晕者9例,眩晕1例,视力异常7例,垂体功能障碍者6例,无任何症状者4例。其中12例行MR冠状位、矢状位增强扫描。结果:囊肿位于垂体内14例,位于垂体内向鞍上延伸9例,位于垂体上方4例;囊肿直径5~20 mm;矢状位囊肿呈类圆形、卵圆形、泪滴形、葫芦形,冠状位呈类圆形、卵圆形、腰果形、葫芦形。与脑白质信号对比,囊液在T1WI、T2WI均呈高信号7例;T1WI、T2WI均呈稍高信号2例;T1WI呈高信号,T2WI呈混杂信号2例、呈低信号6例;T1WI呈低信号、T2WI呈高信号6例;T1WI呈等信号、T2WI呈高信号4例。其中6例T2WI高信号囊肿液中见稍低信号结节影,5例T1WI高信号、1例T1WI等信号。27例囊肿内未见异常强化。7例周围囊肿壁可见异常环线样强化。结论:Rathke裂囊肿发生的位置及形态具有一定的影像特征性,MR T1WI、T2WI信号组成情况复杂多变,MR增强扫描可以与其它鞍区病变相鉴别。
出处 《中国临床医学影像杂志》 CAS 2012年第3期193-195,共3页 Journal of China Clinic Medical Imaging
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参考文献19

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