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扩散加权成像诊断乳腺浸润性导管癌腋窝淋巴结转移
引用本文:陈皓,孙烨,袁飞,洪楠.扩散加权成像诊断乳腺浸润性导管癌腋窝淋巴结转移[J].中国介入影像与治疗学,2014,11(2):92-95.
作者姓名:陈皓  孙烨  袁飞  洪楠
作者单位:北京大学人民医院放射科, 北京 100044;北京大学人民医院放射科, 北京 100044;北京大学人民医院放射科, 北京 100044;北京大学人民医院放射科, 北京 100044
摘    要:目的评价DWI对乳腺浸润性导管癌(IDC)腋窝转移性淋巴结的诊断价值。方法回顾性分析115例病理证实的IDC患者的MRI,选取154枚淋巴结,根据手术及病理确定其性质,测量并比较转移与非转移淋巴结的ADC值,确定诊断转移淋巴结的ADC值界值,计算其敏感度、特异度、阳性预测值、阴性预测值及准确率。结果 154枚淋巴结中,87枚存在转移,其ADC值(0.921±0.161)×10-3 mm2/s]明显低于非转移淋巴结(1.167±0.199)×10-3 mm2/s),P0.001]。以ADC值为1.005×10-3 mm2/s作为转移淋巴结的诊断界值,其敏感度为80.46%,特异度为88.06%,阳性预测值为89.74%,阴性预测值为77.63%,准确率为83.77%。结论 DWI结合ADC值对鉴别乳腺IDC转移与非转移性腋窝淋巴结是有价值的功能影像学方法。

关 键 词:乳腺肿瘤  导管癌  腋窝淋巴结  扩散磁共振成像  表观扩散系数
收稿时间:2013/9/10 0:00:00
修稿时间:2013/10/6 0:00:00

Diffusion-weighted imaging in diagnosis of axillary metastatic lymph nodes in patients with breast invasive ductal carcinoma
CHEN Hao,SUN Ye,YUAN Fei and HONG Nan.Diffusion-weighted imaging in diagnosis of axillary metastatic lymph nodes in patients with breast invasive ductal carcinoma[J].Chinese Journal of Interventional Imaging and Therapy,2014,11(2):92-95.
Authors:CHEN Hao  SUN Ye  YUAN Fei and HONG Nan
Institution:Department of Radiology, Peking University People's Hospital, Beijing 100044, China;Department of Radiology, Peking University People's Hospital, Beijing 100044, China;Department of Radiology, Peking University People's Hospital, Beijing 100044, China;Department of Radiology, Peking University People's Hospital, Beijing 100044, China
Abstract:Objective To assess the value of DWI in differentiation of axillary metastatic from non-metastatic lymph nodes (LNs) in patients with breast invasive ductal carcinoma (IDC). Methods MRI of 115 breast IDC patients were retrospectively analyzed, totally 154 axillary LNs were selected. Metastatic and non-metastatic LNs were classified according to results of surgical operation and histological examination. ADC values were measured and compared, then the cut-off value in differentiating diagnosis was determined, and its sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) were calculated. Results Eighty-seven of 154 were metastatic LNs. ADC values of metastatic LNs (0.921±0.161] ×10-3 mm2/s) were significantly lower than that of non-metastatic LNs (1.167±0.199] ×10-3 mm2/s, P<0.001). Taking 1.005×10-3 mm2/s as the cut-off ADC value, the sensitivity, specificity, PPV, NPV and accuracy was 80.46%, 88.06%, 89.74%, 77.63%, 83.77% in identification of metastasis in axillary lymph nodes, respectively. Conclusion DWI combined with ADC value is a promising functional technique for differentiating metastatic axillary LNs in patients with breast IDC.
Keywords:Breast neoplasms  Ductal carcinoma  Axillary lymph nodes  Diffusion magnetic resonance imaging  Apparent diffusion coefficient
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