摘要
目的:探讨乳腺黏液癌的MRI表现,提高对该病的诊断水平。方法:回顾性分析9例经手术病理证实的乳腺黏液癌患者的MRI表现。结果:MRI示9例均为单侧实性肿块,单发8例,多发、呈簇集状1例;边缘不规则4例,光滑5例;形态不规则4例,分叶状4例,类圆形1例;T_(1)WI均呈稍低信号,T_(2)WI均呈明显高信号,其中7例内部呈混合低信号;DWI均呈高信号,ADC图呈明显高信号,平均ADC值为(1.96±0.15)×10^(-3) mm^(2)/s,高于正常乳腺组织的ADC值[(1.08±0.25)×10^(-3) mm^(2)/s](P<0.05)。增强扫描6例动脉期至延迟期均表现为不规则明显环形强化,伴内部不均匀轻中度强化及分隔样、小结节强化;3例呈均匀或不均匀明显强化。TIC均为流入型,其中2例伴平台型。结论:乳腺黏液癌的MRI表现有一定特征,ADC图和TIC呈良性特点,MRI乳腺影像报告和数据系统(BI-RADS)分类易低估,结合肿瘤形态学及T_(2)WI、内部强化方式,可在术前作出正确诊断。
Objective:To study MRI features of mucinous breast carcinoma and improve the diagnostic accuracy.Methods:MRI findings of 9 patients with pathologically proved mucinous breast carcinoma were retrospectively reviewed.Results:All 9 cases were unilateral solid masses,in which,8 single and 1 case showing multiple lesions and foci clustered;4 cases of irregular edge and 5 cases of smooth edge;4 cases irregular,4 cases lobulated,1 case of round.The lesions showed low signal on T_(1)WI,high signal on T_(2)WI(7 cases showing mixed slightly lower signal),high signal on DWI and ADC,with average ADC value of(1.96±0.15)×10^(-3) mm^(2)/s,which was higher than normal breast tissue[(1.08±0.25)×10^(-3) mm^(2)/s](P<0.05).Obvious annular enhancement at the edge,accompanying internal uneven light-moderate enhancement and enhancement of separation and small nodule showed in 6 cases.3 cases showed homogeneous or heterogeneous obviously enhancement.TIC of all lesions were ascending type,two of which with platform type.Conclusions:Mucinous breast carcinoma has certain characteristics on MRI,shows benign features on ADC and TIC.And mucinous breast carcinoma is easily underestimated by MRI BI-RADS classification.Tumor morphology,T_(2)WI and internal enhancement methods should be combined to make a pre-operative diagnosis of it.
作者
杨静
李新瑜
黄咏文
YANG Jing;LI Xinyu;HUANG Yongwen(Imaging Center of the First Affiliated Hospital,Clinical Medical School of Henan University of Science and Technology,Luoyang 471003,China)
出处
《中国中西医结合影像学杂志》
2021年第6期550-553,共4页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
关键词
乳腺肿瘤
黏液癌
磁共振成像
弥散
Breast neoplasms
Mucinous carcinoma
Diffusion magnetic resonance imaging
