摘要
目的探讨乳腺非肿块性浸润性导管癌的MRI影像学特点。资料与方法回顾性分析27例经手术病理证实的乳腺非肿块性浸润性导管癌,分析病灶的形态、信号特点、ADC值及增强时间-信号曲线(TIC)的类型。结果 27例乳腺癌中,T1WI呈低信号3例,等信号22例,高信号2例;T2WI呈高信号18例,等或稍低信号9例。DWI呈等信号4例,高信号23例。ADC值范围(0.78～1.35)×10-3mm2/s,平均(1.15±0.21)×10-3mm2/s。病灶分布呈节段性17例,局灶性1例,多区域性5例,弥漫性4例。14例见患侧乳腺有明显粗大的动脉血管显影。TIC曲线呈平台型(Ⅱ型)8例,廓清型(Ⅲ型)19例。结论乳腺非肿块性浸润性导管癌的MRI影像表现有一定的特点,以节段性分布、较低的ADC值及Ⅲ型TIC曲线诊断价值最大。
Purpose To analyze the magnetic resonance imaging （MRI） characteristics of non-mass-like infiltrating ductal carcinoma of the breast. Materials and Methods 27 cases with non-mass-like infiltrating ductal carcinoma of the breast were analyzed retrospectively. All the lesions were confirmed by pathology after operation or puncture biopsy. All of the patients underwent conventional MRI, diffusion weighted imaging （DWI） and dynamical contrast enhancement （DCE）. The morphology, signal intensity, ADC value and the type of time-signal intensity curve （TIC） of dynamic contrast enhancement （DCE） were analyzed. Results Of 27 cases, 3 cases were hypointensity, 22 cases were isointensity, and 2 cases were hyperintensity on T1WI. 18 cases showed hyperintensity and 9 cases showed isointensity or slightly hypointensity on T2WI. On DWI images, 4 cases showed isointensity and 23 cases showed hyperintensity. The range oftheADC value was 0.78 ~ 10-3mm2/s to 1.35 X 103mm2/s, and the mean value was （1.15 _＋ 0.21） X 10-3 mm＇）s. The distribution of lesions were segmental （17 cases）, focal （I case）, multi-regional（5 cases） and diffused （4 cases）. Grossus vessels could be observed in 14 cases. There were two types of TIC, which were type II （8 cases） and type Ill （19 cases）. Conclusion The MRI features of non-mass-like infiltrating ductal carcinoma of the breast are characteristic. Segmental distribution of the lesions, lower ADC value and TIC with type II are more important for the diagnosis
出处
《中国医学影像学杂志》
CSCD
北大核心
2011年第8期601-604,共4页
Chinese Journal of Medical Imaging
关键词
癌
导管
乳腺
磁共振成像
诊断
Carcinoma, ductal, breast
Magnetic resonance imaging
Diagnosis
作者简介
通讯作者 程流泉E—mail：cheng．liuquan@gmail．com
