DWI在肾脏乏脂肪血管平滑肌脂肪瘤与透明细胞癌鉴别诊断的价值  

Diffusion-weighted Imaging in Differentiation of Lipid Poor Renal Angiomyolipoma from Renal Cell Carcinoma

作　　者：黄丽军[1] 陆志华[1] 张明波[1] 郝强[2] 

机构地区：[1]苏州大学附属常熟医院放射科,江苏苏州215500 [2]第二军医大学长海医院放射科,上海200433

出　　处：《中国CT和MRI杂志》2017年第6期94-96,106,共4页Chinese Journal of CT and MRI

基　　金：第二军医大学长海医院"1255"计划基金;编号:CH12550900

摘　　要：目的探讨DW-MRI在肾乏脂肪血管平滑肌脂肪瘤(lipid poor renal angiomyolipoma,LPRAML)与肾透明细胞癌(renal clear cell carcinoma,RCCC)的鉴别诊断价值,提高LPRAML的诊断准确率。方法对经病理证实为LPRAML的21例和RCCC 20例术前磁共振图像进行分析,分别测量病灶的ADC值并计算出平均值,用独立样本t检验比较两组病例的平均ADC值的差异。结果 LPRAML的病灶的ADC值为(1.21±0.21)×10^(﹣3)mm^2/s;RCCC的平均ADC值为(0.89±0.08)×10^(﹣3)mm^2/s,LPRAML的ADC值高于RCCC,且差异具有统计学意义(t=8.32,P<0.01)。结论 LPRAML和RCCC具有不同的扩散特征,ADC值对两者的鉴别诊断具有重要价值。Objective To explore the value of Diffusion-weighted imaging （DWI-MRI）in differentiation of lipid poor renal angiomyolipoma （LPRAML） from renal clear cell carcinoma （RCCC）, and to improve the accuracy in diagnosing LPRAML. Methods The MR images of pathologically confirmed LPRAML （21 cases） and RCCC （20 cases） were analyzed and the mean ADC values were calculated, then the means ADC values of the two groups were compared with the student＇s test. Results The mean ADC values of LPRAML and RCCC were （1.21±0.21 ）×10^-3mm^2/s and （0.89±0.08）×10^-3mm^2/s respectively, and the mean ADC value of LPRAML was significantly higher than that of RCCC （t=8.32, P〈0.01）, Conclusion LPRAML and RCCC have different characteristics, ADC value can be applied as an important tool in differentiate LPRAML from RCCC.

关 键 词：肾乏脂肪血管平滑肌脂肪瘤 肾透明细胞癌 磁共振成像 扩散加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R737.11[医药卫生—诊断学]