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超声漏诊假性动脉瘤一例分析

Functional and Molecular Medical Imaging(Electronic Edition)(2017)

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Abstract
1临床资料 患者男,26岁,20 d前外伤后右小腿出现鹅蛋大小肿块,自觉疼痛伴右下肢麻木、乏力.查体:右小腿中段胫前一包块,可触及搏动、震颤,右侧股动脉、腘动脉搏动可及,足背动脉未及.超声所见:右小腿胫前动脉前外侧探及一混合性回声区,与胫前动脉相通,大小约10.46 cm×3.65 cm,边界尚清,无回声区内可见红蓝彩色血流翻滚,并见由胫前动脉延续而来的彩色血流束冲入包块内,于距胫前动脉起始段3.9 cm处探及双向血流频谱,血流峰值2.87/0.76 m/s(见图1).超声提示:右小腿中上段胫前动脉破裂伴假性动脉瘤及附壁血栓形成.双下肢CTA示:右侧胫前动脉破裂出血,伴假性动脉瘤形成.后经手术证实:右胫前动脉前壁碎裂4 cm,远端胫前动脉闭塞.
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