乳腺恶性乳头状病变的MRI征象  

MRI features of malignant breast papillary lesions

作　　者：孙琨[1] 严福华[1] 柴维敏[1] 陈克敏[1] 贺娜英[1] 

机构地区：[1]上海交通大学医学院附属瑞金医院放射科,上海200025

出　　处：《中国医学影像技术》2013年第11期1765-1768,共4页Chinese Journal of Medical Imaging Technology

基　　金：国家自然科学基金面上项目(81271740);上海市科委科研项目(10JC1410900);上海市科委生药重点项目(10411953000)

摘　　要：目的观察乳腺恶性乳头状病变的MRI表现。方法回顾性分析33例经病理检查证实为乳腺恶性乳头状病变患者的MRI资料,包括乳腺乳头状癌19例(其中16例为导管内乳头状癌,3例为包裹性乳头状癌)及乳腺导管内乳头状瘤伴导管原位癌14例,并与26例乳腺交界性乳头状病变(导管内乳头瘤伴不典型增生)进行对照。参照美国放射学会提出的乳腺影像报告及数据系统进行分析。结果乳腺恶性乳头状病变MRI多表现为位于非乳晕区的单灶肿块,平扫呈等信号,增强扫描呈环状肿块样强化,可伴导管扩张,时间-信号强度曲线呈Ⅲ型曲线。乳腺交界性与恶性乳头状病变间病灶数、平扫信号强度、增强扫描强化方式及是否伴有导管扩张征象的差异有统计学意义(P均<0.05)。结论乳腺恶性乳头状病变的MRI表现具有一定特征;MRI有助于鉴别大部分乳腺交界性与恶性乳头状病变。Objective To observe the MRI features of malignant breast papillary lesions. Methods MRI data of 33 patients with malignant papillary lesions proved by pathology, including 19 cases of breast papillary carcinoma （16 cases of in- traductal papillary carcinoma and 3 cases of encapsulated papillary carcinoma）, 14 cases of intraductal papilloma with ductal carcinoma in situ were retrospectively reviewed referring to breast imaging reporting and data system and compared with those of 26 patients with atypical papillary lesions （intraductal papilloma with atypical hyperplasia）. Results The most common MRI findings of malignant papillary lesions were single lesion located in the retro-areolar region, isointensity on plain scan, rim-mass-enhancement on enhanced scan combined with duetal dilatation or not. The time-intensity curve ap- peared as type Ⅲ in majority. There was statistical difference in the number of tumor, signal intensity on plain scan, enhancement pattern on enhanced scan and ductal dilatation between malignant papillary and atypical papillary lesions （all P〈 0.05）. Conclusion Breast MRI shows great advantage on finding of malignant papillary lesions. It can distinguish most of malignant papillary lesions from atypical papillary lesions.

关 键 词：乳腺肿瘤 磁共振成像 

分 类 号：R737.9[医药卫生—肿瘤] R445.2[医药卫生—临床医学]