摘要
目的:分析中老年女性乳腺纤维腺瘤的MRI的特点,以期提高中老年女性乳腺纤维腺瘤的诊断准确率。方法:搜集2013年1月-2014年7月手术病理证实为纤维腺瘤且术前行MRI检查的患者共162例(217个病灶),本研究将患者分为年轻组(<40岁)156例和中老年组(≥40岁)61例。分析病灶的形态学特点、表观扩散系数(ADC)及动态增强特点。结果:本组乳腺纤维腺瘤形态以分叶状(42.4%,92/217)及类圆形(40.1%,87/217)为主,少数为圆形(13.8%,30/217)及不规则形(1.4%,3/217)。边缘清楚者占92.2%(200/217),不清楚者占7.8%(17/217)。年轻组及中老年组在病灶形态及边缘上的差别均无统计学意义(P>0.05)。内部强化以均匀强化(53.5%,116/217)及不均匀强化(44.7%,97/217)为主,少数表现为环形强化(0.5%,1/217)及不强化(1.4%,3/217),两组内部强化构成比差异有统计学意义(P=0.01)。年轻组ADC值中位数为1.60×10-3 mm2/s,略低于中老年组ADC值中位数(1.67×10-3 mm2/s),两组差异均无统计学意义(Z=-1.55,P=0.121)。结论:乳腺纤维腺瘤在MRI多表现边缘清楚的类圆形或分叶状肿块,增强以均匀及不均匀强化为主。中老年组纤维腺瘤在形态学及ADC值上与年轻组无统计学差异。
Objective：To evaluate magnetic resonance imaging （MRI）findings of breast fibroadenoma in elder woman in order to improve the diagnostic accuracy.Methods：This retrospective study evaluated 162 patients （217 lesions）with pathologically-confirmed breast fibroadenoma in our hospital between January 2013 and July 2014.All the patients under-went MRI examination before operation.Morphological characteristics,apparent diffusion coefficient （ADC）values,and he-modynamic characteristics were reviewed.All the patients were divided into two groups according to ages,the younger group （age 〈40 years,156 cases）and the elder group （age≥40 years,61 cases）.Results：The shapes of breast fibroadeno-ma were more commonly lobulated （42.4%,92/217）and oval （40.1%,87/217）,less frequently round （13.8%,30/217）, and irregular （1.4%,3/217）.The margins were circumscribed in 92.2% （200/217）of cases and not circumscribed in the remaining 7.8% （17/217）.No significant differences in shape and margin were observed between the younger group and elder group.The internal enhancement of breast fibroadenoma were more commonly homogeneous （53.5%,116/217）and heterogeneous （44.7%,97/217）,less frequently rim-enhanced （0.5%,1/217）and non-enhanced （1.4%,3/217）,with a statistically significant difference on composition of the internal enhancement between the two groups （P =0.010）.The me-dian ADC value of the lesion in the younger group was 1.60 × 10 -3 mm2/s,slightly lower than that of the elder group （1.67×10 -3 mm2/s）,however,no significant difference was found （Z =-1.55,P =0.121）.Conclusions：Breast fibroade-noma commonly shows a lobulated or oval mass with circumscribed margin,and homogeneous or heterogeneous enhance-ment.There was no significant difference in the morphology and ADC values between the younger group and the elder group.
出处
《放射学实践》
2014年第10期1112-1115,共4页
Radiologic Practice
基金
上海市科委基础重点项目(12JC1406500)
上海市卫生系统优秀学科带头人培养计划(XBR2013110)
关键词
扩散磁共振成像
乳腺疾病
诊断
Diffusion magnetic resonance imaging Breast diseases Diagnosis
