MRI动态增强扫描对乳腺纤维腺瘤和乳腺癌的诊断价值

目的探讨乳腺纤维腺瘤和乳腺癌的MRI动态增强表现,以期提高对乳腺疾病的诊断准确性。方法回顾性分析30例经手术或穿刺病理证实的乳腺纤维腺瘤和乳腺癌患者的MRI资料,分析病灶的形态特征、动态增强特征,以及病灶的时间-信号强度曲线(TIC)表达。结果 30例患者共53个病灶,其中乳腺纤维腺瘤病灶38个,乳腺癌病灶15个。乳腺纤维腺瘤边界大多较清晰光整,且增强后强化均匀或不强化,TIC表达主要为I型,占78.95%。乳腺癌的形态多表现为不规则或毛刺状,强化不均匀,TIC以Ⅲ型为主,占60.00%。二者在Ⅱ型TIC上有交叉。结论 MRI动态增强扫描可以提高病灶的检出率,能更好地鉴别乳腺癌和乳腺纤维腺瘤。

Value of dynamic enhanced MRI(DCE-MRI) in diagnosing the breast fibroadenoma and breast carcinoma

Objective To investigate the imaging appearance of breast fibroadenoma and breast carcinoma by the dynamic enhanced MRI(DCE-MRI),and improve the diagnostic accuracy of the breast diseases.Methods Imaging data of 30 patients with breast fibroadenoma and breast carcinoma proved by operation or biopsy were retrospectively analized.MR imaging features of morphology,dynamic enhancement pattern,and the time-signal intensity curve(TIC) were evaluated.Results Among the 30 patients with 53 breast lesions,38 were having breast fibroadenoma,15 breast carcinoma.Most breast fibroadenoma cases showed smooth and tidy borders,homogeneous enhancement or no enhancement.Type Ⅰ TIC were observed in most cases(78.95%).While most breast carcinoma showed irregular shape or speculated margin,and heterogeneous enhancement or rim enhancement.Type Ⅲ TIC curves were observed in most breast carcinoma(60.00%).Type Ⅱ TIC curves were found in both breast fibroadenoma and breast carcinoma.Conclusion DCE-MRI can improve the lesions′ relevance ratio of breast diseases,and is helpful in diagnosing the difference between breast fibroadenoma and breast carcinoma.