颅内巨大胼周动脉蛇形动脉瘤一例
Radiologic Practice（2020）
Abstract
病例资料患者,女,59岁,因“头晕伴头痛1周”入院.查体:心肺听诊无明显异常.既往有糖尿病、高血压、脑梗死病史.颅脑CT平扫示额部中线区团块状混杂高密度影,侧脑室受压,中线结构稍移位(图1),考虑脑外肿瘤,脑膜瘤可能.MRI:平扫T1WI示额部团块状不均匀等高信号影,T2 WI呈混杂高低信号,病灶边缘可见偏心性走行的低信号流空血管影,MRA未见明显血管与病灶相通,MRI增强扫描可见低信号流空血管影及病灶边缘均匀强化(图2～4).
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