摘要
目的:分析乳腺叶状肿瘤的MRI特征,提高对本病的MRI诊断水平。方法:回顾性分析51例经手术病理证实的乳腺叶状肿瘤的MRI资料,其中良性31例、交界性15例、恶性5例。结果:51例叶状肿瘤的主要MRI表现:分叶状或类圆形肿块,边界清晰,T2WI信号多不均匀、可见低信号分隔,动态增强扫描可见低信号分隔不强化,时间-信号强度曲线以渐进型和平台型为主。良性、交界性及恶性叶状肿瘤的ADC值分别为(1.66±0.18)×10^(-3)、(1.54±0.17)×10^(-3)和(1.33±0.23)×10^(-3) mm^2/s;恶性和交界性合并后(非良性)ADC值为(1.46±0.21)×10^(-3) mm^2/s,与良性肿瘤比较,差异有统计学意义(t=3.08,P<0.05)。结论:MRI能够准确显示乳腺叶状肿瘤的形态学及血流动力学特征,为术前明确诊断提供诊断依据。
Objectlve：To analyze the MRI features of phyllode tumor of the breast （PTB）,thus to improve the MRI diagnostic level of this disease. Methods： The MRI findings of 51 patients with phyllodes tumor of breast confirmed by surgery and pathology were analyzed retrospectively. Of the 51 cases,there were 31 cases with benign tumors, 15 cases with borderline tumors and 5 cases with malignant tumors. Results： In the 51 patients, the main MRI findings were as follows： lobulated shape or oval shape with welbdefined margin,heterogeneous signal intensity with hypointense internal septations on T2-weighted images, and the internal septations showed almost no enhancement on DCE-MRI, time-signal intensity curves （TIC） were steady enhancement type or plateau type. The mean ADC value of benign, borderline and malignant PT- Bs was （ 1.66 ± 0.18）×10^-3 （ 1. 54± 0. 17 ）×10^-3 and （ 1.33 ±0.23 ）×10^-3 mm^2 / s, respectively; and that of malignant combined with borderline （non-benign） PTBs was （1.46 ± 0.21） ）×10^-3 mm^2 / s, which was statistically different with that of benign tumors （t= 3.08,P〈0. 05）. Conelusion： MRI can accurately display the morphologie and hemodynamieal characteristics of breast phyllode tumor,thus can offer important diagnostic information before operation.
出处
《放射学实践》
北大核心
2017年第8期847-850,共4页
Radiologic Practice
关键词
乳腺肿瘤
叶状肿瘤
磁共振成像
表观扩散系数
Breast neoplasms
Phyllodes tumor
Magnetic resonance imaging
Apparent diffusion coefficient
