乳腺腺病瘤MRI表现特征分析

发布时间：2018-07-07 08:23

本文选题：乳腺纤维囊性病 + 腺病瘤　；参考：《临床放射学杂志》2015年03期

【摘要】：目的分析乳腺腺病瘤MRI平扫、动态增强(DCE)和扩散加权成像(DWI)表现特征,提高对腺病瘤的认识和术前诊断准确率。方法搜集2008年10月至2013年11月期间行乳腺MRI检查并经手术病理证实的8例患者9个乳腺腺病瘤,依据美国放射学会提出的乳腺影像报告和数据系统磁共振成像(BI-RADS-MRI)标准,回顾性分析病变MRI表现,包括形态学、平扫T1WI及T2WI信号、DCE表现及时间-信号强度曲线(TIC)类型、DWI信号及ADC值。结果 9个腺病瘤中8个表现为肿块,1个表现为非肿块。8个肿块型腺病瘤中,6个呈圆形或卵圆形,所有病变均边界清楚,6个边缘不规则;于平扫T1WI均呈等信号,脂肪抑制T2WI呈等或稍高信号;DCE-MRI扫描均于早期时相明显强化,早期强化率平均值为(173.2±52.8)%,4个腺病瘤内部呈不均匀强化;7个TIC呈流出型;于DWI上呈高或稍高信号,b值为500 s/mm2时,平均ADC值为(1.4±0.3)×10-3mm2/s,b值为1000 s/mm2时,平均ADC值为(1.2±0.3)×10-3mm2/s。1例非肿块型腺病瘤呈区域性分布,呈不均匀强化,TIC呈Ⅰ型。结论腺病瘤DEC-MRI扫描TIC类型和DWI上ADC值表现与乳腺癌相似,但其形态上多呈良性病变特点,MRI检查有助于乳腺腺病瘤的诊断,但确诊仍需依靠组织病理学。
[Abstract]:Objective to analyze the features of plain MRI, dynamic contrast enhancement (DCE) and diffusion weighted imaging (DWI) in breast adenoma, and to improve the recognition of adenoma and the accuracy of preoperative diagnosis. Methods from October 2008 to November 2013, 9 breast adenomas were collected from 8 patients who underwent MRI examination and confirmed by surgery and pathology, according to the mammographic report and data system magnetic resonance imaging (BI-RADS-MRI) standard of the American Society of Radiology. The MRI features of the lesions were retrospectively analyzed, including morphological features, DCE findings on T1WI and T2WI signals, and time-signal intensity curve (TIC) type on DWI and ADC values. Results of the 9 adenopathy tumors, 8 were masses, 1 was non-mass, 6 were round or oval, all lesions were well defined, 6 were irregular in margin, and all showed isointensity on T1WI. DCE-MRI scan of fat suppression T _ 2WI showed iso-or slightly high signal intensity. The average enhancement rate was (173.2 卤52.8), the enhancement was uneven in 4 adenomas, 7 TICs were efflux, and when the signal intensity was high or slightly higher than 500 s/mm2 on DWI, the enhancement rate was (173.2 卤52.80). When the average ADC value was (1.4 卤0.3) 脳 10 ~ (-3) mm ~ (-2) / s ~ (-1) s/mm2, the mean ADC value was (1.2 卤0.3) 脳 10-3mm2/s.1. The mean ADC value was (1.2 卤0.3) 脳 10 ~ (-3) 脳 10 ~ (-3) 脳 10 ~ (-3) mm ~ (-2) 路s ~ (-1) 10-3mm2/s.1. Conclusion the type of TIC and ADC on DWI of adenoma are similar to those of breast cancer, but the morphologic features of benign lesions may be helpful to the diagnosis of adenoma, but the diagnosis still depends on histopathology.
【作者单位】：天津医科大学肿瘤医院乳腺影像诊断科国家肿瘤临床医学研究中心天津市"肿瘤防治"重点实验室乳腺癌防治教育部重点实验室;
【基金】：天津市抗癌重大科技专项资助项目(编号:12ZCDZSY16000)
【分类号】：R737.9;R445.2

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