乳腺纤维腺瘤的3.0T MRI表现  

Imaging appearance of breast fibroadenoma in 3.0T MR

作　　者：刘伟 叶春涛[1] 嵇鸣 李蔚萍[2] 卢晨[3] 

机构地区：[1]复旦大学附属华东医院放射科MR室,上海200032 [2]复旦大学附属华东医院普外科,上海200032 [3]复旦大学附属华东医院病理科,上海200032

出　　处：《放射学实践》2011年第3期302-305,共4页Radiologic Practice

摘　　要：目的:探讨乳腺纤维腺瘤3.0T MRI表现,提高对乳腺疾病的诊断准确性。方法:回顾性分析19例(21个病灶)经手术或穿刺病理证实的乳腺纤维腺瘤患者的MRI资料。分析病灶的MRI形态学特征、信号强度及动态增强特征。结果:所有病灶边界清晰,14个病灶可见分叶状改变,T2WI上11个病灶显示不完整的包膜,病灶内可见低信号分隔:T2WI显示4个,TIRM-T2WI显示10个,增强后显示11个。增强扫描示病灶强化均匀17个,不均匀4个。病灶的时间-信号强度曲线分为4种类型:Ⅰ型曲线17个,Ⅱ型曲线2个,Ⅳ型曲线2个。结论:清晰的边界、分叶状形态、不完整的包膜、无强化的内部间隔和持续均匀的强化是纤维腺瘤的MRI特征性表现,3.0T MRI能清晰地显示上述细微结构,对乳腺纤维腺瘤的诊断具有重要意义。Objective：To investigate the imaging appearance of breast fibroadenoma at 3.0T MR and improve the diagnostic accuracy.Methods：Imaging data of 19 patients（21 lesions） with breast fibroadenoma proved by operation or biopsy were retrospectively analyzed.MR Imaging features of morphology,signal intensity and dynamic enhancement pattern were evaluated.Results：All lesions showed well-defined margin.Lobulation can be found in 14 lesions,incomplete capsule in 11 lesions on T2WI.4 lesions on T2WI,10 lesions on TIRM-T2WI and 11 lesions after enhancement showed hypointense internal septa respectively.17 lesions revealed type I time-signal intensity curve,2 lesions type Ⅱ,2 lesions type Ⅳ.17 lesions showed homogeneous enhancement and 4 heterogeneous enhancement.Conclusion：Breast fibroadenoma has characteristic MR imaging features including well-defined margin,lobulation,incomplete capsule,non-enhanced internal septa,homogenous and progressive enhancement.3.0T MR can well demonstrate these tiny signs and is important in diagnosing breast fibroadenoma.

关 键 词：乳腺肿瘤 磁共振成像 包膜 

分 类 号：R737.9[医药卫生—肿瘤]