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肾脏乏脂肪血管平滑肌脂肪瘤的CT和MRI表现

Journal of medical imaging(2014)

Cited 23|Views0
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Abstract
目的 探讨肾脏乏脂肪血管平滑肌脂肪瘤的CT和MR特点,以提高对其认识.方法 回顾性分析经手术、病理证实的缺乏脂肪肾血管平滑肌脂肪瘤21例的CT和MR表现.11例行CT平扫及双期增强扫描,8例行CT平扫+增强及MR扫描,2例仅行MR平扫.结果 本组21例中,肿瘤最大6.5cm×7.0cm,最小0.8cm×1.0cm.肿瘤与肾实质交界表现为Ⅴ型17例,杯口样改变4例.CT平扫19例呈高密度16例,等密度2例,呈混杂密度1例.MR检查10例T2 WI呈均匀低信号2例,呈等及稍低混杂信号8例;T1WI呈等略低信号,DWI均呈高信号.增强扫描19例强化方式呈快进快出模式16例,呈持续强化模式3例.结论 肾脏乏脂肪的血管平滑肌脂肪瘤影像学表现有一定的特征,其密度(信号)、形态及强化方式等有助于和肾癌区别.
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Key words
Kidney,Angiomyolipoma,The imaging
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