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Eur Radiol:蛋蛋长病了?动态增强和扩散加权MR成像在显示隐匿性实性小睾丸肿瘤的价值

2017-09-05 shaosai MedSci原创

精原细胞瘤多发生于中年以后,常为单侧性,右侧略多于左侧。发生于隐睾的机率较正常位睾丸高几十倍。本瘤为低度恶性。85%的患者睾丸明显肿大,肿瘤局部侵犯力较低,肿瘤一般有明显界限。精原细胞瘤发展较慢,一般先转移至腹膜后淋巴结,后期也可发生广泛血道播散,确诊时,临床期病例占60%~80%。本研究旨在评价利用动态对比增强(DCE)磁共振成像(MRI)的半定量和定量指标以及扩散加权(DW)MRI在鉴别良恶性

精原细胞瘤多发生于中年以后,常为单侧性,右侧略多于左侧。发生于隐睾的机率较正常位睾丸高几十倍。本瘤为低度恶性。85%的患者睾丸明显肿大,肿瘤局部侵犯力较低,肿瘤一般有明显界限。精原细胞瘤发展较慢,一般先转移至腹膜后淋巴结,后期也可发生广泛血道播散,确诊时,临床期病例占60%~80%。本研究旨在评价利用动态对比增强(DCE)磁共振成像(MRI)的半定量和定量指标以及扩散加权(DW)MRI在鉴别良恶性隐匿性实性小睾丸肿瘤的价值,并将结果发表在Eur Radiol上。本研究共纳入了47例隐匿性实性小睾丸肿瘤的患者,并行DCE-MRI和DWI检查。计算肿瘤相关影像学参数及指标:增强峰度(PE)、达峰时间(TTP)、增强峰度百分比(Epeak)、流入速率(WIR)、强化信号比率(SER)、量转移常数(K trans)、速率常数(K ep)、血管外细胞外空间体积分数(Ve)和首次曲线下面积(iAUC)。评价DWI信号强度和表观弥散系数(ADC)。良性组E peak、WIR、K trans 、K ep 和iAUC 要高于恶性组,而TTP要低于恶性组(p<0.05)。所有肿瘤ADC值相似(p &

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    2017-09-07 zhangph
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    2017-09-07 一个字-牛

    学习了谢谢分享

    0

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