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中华乳腺病杂志(电子版) ›› 2017, Vol. 11 ›› Issue (01) : 33 -38. doi: 10.3877/cma.j.issn.1674-0807.2017.01.007

论著

动态增强磁共振成像在乳腺非肿块性强化病变中的应用价值
王增奎1, 杨栋梁2,(), 王春杰1, 孙文静1   
  1. 1.061000 河北省沧州市人民医院影像中心
    2.061001 河北省沧州医学高等专科学校
  • 收稿日期:2016-04-06 出版日期:2017-02-01
  • 通信作者: 杨栋梁
  • 基金资助:
    沧州市科学技术研究与发展指导计划项目(162302044)

Application value of dynamic contrast-enhanced magnetic resonance imaging in breast lesions presented as non-mass-like enhancement

Zengkui Wang1, Dongliang Yang2,(), Chunjie Wang1, Wenjing Sun1   

  1. 1.Department of Radiology, Cangzhou People's Hospital, Cangzhou 061000, China
    2.Cangzhou Medical College, Cangzhou 061001, China
  • Received:2016-04-06 Published:2017-02-01
  • Corresponding author: Dongliang Yang
引用本文:

王增奎, 杨栋梁, 王春杰, 孙文静. 动态增强磁共振成像在乳腺非肿块性强化病变中的应用价值[J/OL]. 中华乳腺病杂志(电子版), 2017, 11(01): 33-38.

Zengkui Wang, Dongliang Yang, Chunjie Wang, Wenjing Sun. Application value of dynamic contrast-enhanced magnetic resonance imaging in breast lesions presented as non-mass-like enhancement[J/OL]. Chinese Journal of Breast Disease(Electronic Edition), 2017, 11(01): 33-38.

目的

探讨动态增强磁共振成像(DCE-MRI)在乳腺非肿块性强化(NMLE)病变良恶性鉴别诊断中的应用价值。

方法

回顾性分析2012 年1 月至2015 年12 月在沧州市人民医院经病理证实的70 例NMLE 患者的DCE-MRI 影像资料, 对NMLE 病变的分布特点、强化特点、时间-信号强度曲线(TIC) 类型进行单因素分析(χ2 检验和非参数检验)及多因素Logistic 回归分析,表观扩散系数(ADC)值比较行t 检验,探讨良恶性病变的影像学差异。

结果

70 例NMLE 患者中28 例为良性,42 例为恶性。 NMLE 良性病灶ADC 值为(1.36±0.27)×10-3 mm2/s,恶性病灶ADC 值为(1.09±0.22)×10-3 mm2/s,差异有统计学意义(t=4.644, P<0.001)。 单因素分析显示,NMLE 的良恶性与分布特点和强化方式有关(χ2=11.013,P=0.009;χ2=8.163,P=0.041)。 多因素Logistic 回归分析显示,节段性分布为恶性病变的独立危险因素(OR=7.543, 95%CI: 1.963 ~28.981,P=0.003)。

结论

DCE-MRI 在NMLE 病变良恶性鉴别中具有较高的应用价值。 节段性分布常提示恶性病变。

Objective

To investigate the application value of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in differential diagnosis of benign and malignant breast lesions presented as non-mass-like enhancement (NMLE).

Methods

DCE-MRI data of 70 patients with NMLE confirmed by pathology in Cangzhou People's Hospital were analyzed retrospectively from January 2012 to December 2015.The distribution characteristics, enhancement characteristics and time-intensity curve (TIC) types of NMLE lesions were analyzed by univariate analysis(χ2 text and nonparametric test) and multivariate Logistic regression analysis, and apparent diffusion coefficient (ADC) was compared by t test to explore the difference between benign and malignant lesions.

Results

In 70 patients with NMLE, 28 patients had benign lesions and 42 patients had malignant lesions. The ADC value was (1.36 ± 0.27) ×10-3 mm2/s in benign lesions and(1.09 ± 0.22) ×10-3 mm2/s in malignant lesions, indicating a significant difference (t=4.644, P<0.001).Univariate analysis showed that malignancy of NMLE lesions was related to distribution characteristics and enhancement characteristics (χ2=11.013,P=0.009;χ2=8.163,P=0.041). Multivariate Logistic regression analysis showed that segmental distribution was an independent risk factor for malignant lesions (OR=7.543,95%CI:1.963-28.981, P=0.003).

Conclusions

DCE-MRI has a high application value in differential diagnosis of benign and malignant lesions of NMLE. Segmental distribution often indicates malignant lesions.

表1 乳腺非肿块性强化病变多因素分析变量赋值表
图1 导管原位癌患者的磁共振成像图 注:a 图为T1WI;b 图为T2WI;c 图为增强T1WI-SPAIR;d 图为DWI。 患者女,43 岁,发现左乳肿物3 个月,左乳内上象限节段样分布病灶,T1WI 呈等信号,T2WI 抑脂像呈不均匀稍高信号,DWI 像呈高信号,增强扫描呈簇状环形强化;T1WI 为T1加权像,T2WI 为T2 加权像,T1WI-SPAIR 为T1 加权像脂肪抑制序列,DWI 为弥散加权像
图2 浸润性导管癌患者的磁共振成像图 注:a 图为T1WI;b 图为T2WI;c 图为增强T1WI-SPAIR;d 图为DWI。 患者女,52 岁, 发现右乳肿物1 周,右乳外上象限节段样分布病灶,T1WI 呈等信号,T2WI 抑脂像呈不均匀稍高信号,DWI 呈高信号,增强扫描呈簇状环形强化,病灶邻近乳晕部皮肤凹陷;T1WI 为T1 加权像,T2WI 为T2 加权像,T1WI-SPAIR 为T1 加权像脂肪抑制序列,DWI 为弥散加权像
图3 浆细胞性乳腺炎患者的磁共振成像图 注:a 图为T1WI;b 图为T2WI;c 图为增强T1WI-SPAIR;d 图为DWI。 患者女,29 岁, 发现右乳溢液1 个月,右乳外侧区域性病灶,T1WI 呈略高信号,T2WI 抑脂像呈不均匀稍高信号,DWI 呈高信号,增强扫描呈均匀强化;T1WI 为T1 加权像,T2WI 为T2 加权像,T1WI-SPAIR 为T1 加权像脂肪抑制序列,DWI 为弥散加权像
图4 乳腺腺病患者的磁共振成像图 注:a 图为T1WI;b 图为T2WI;c 图为增强T1WI-SPAIR;d 图为DWI。 患者女,49 岁, 右乳胀痛2 周,右乳外侧集簇状强化,在MRI 平扫及DWI 图像中显示不清;T1WI 为T1 加权像,T2WI 为T2 加权像,T1WI-SPAIR 为T1 加权像脂肪抑制序列,DWI 为弥散加权像
表2 70 例乳腺非肿块性强化病变的病理学类型
表3 70 例NMLE 良恶性病变的动态增强磁共振成像表现的单因素分析
表4 70 例NMLE 良恶性病变的动态增强磁共振成像表现的多因素Logistic 回归分析
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