【摘要】 目的 探讨MRI对X线摄影中乳腺“局灶性不对称”(FAB)征象的诊断价值。方法 回顾性分析经病理证实的46例FAB的MRI形态学特点及动态增强时间-信号强度曲线(TIC)的类型。结果 在FAB相应区域,MRI检出46例病灶,病理证实良性病变35例,恶性病变11例。其中外形分叶及边缘毛刺的准确度、阳性预测值以及阴性预测值分别为82.61%、66.67%、86.49%和86.96%、85.71%、87.18%。TIC显示:Ⅰ型17例,均为良性;Ⅱ型6例,其中良性4例,恶性2例;Ⅲ型9例,均为恶性。MRI对其良恶性诊断的准确度为86.96%,阳性预测值和阴性预测值分别为81.82%与96.88%。结论 MRI能够准确判断FAB中是否存在潜在病灶,并能较准确地判断其良恶性。更多还原

【Abstract】 Objective To evaluate the diagnostic value of MRI for the mammographic sign of focal asymmetry of the breast(FAB).Methods The morphological features of MRI and Time-signal intensity curve(TIC) types of 46 cases of mammographic signs of FAB were analyzed retrospectively.Results In all 46 patients,MRI detected 46 lesions in the corresponding areas of FAB on mammography,in which 35 cases of benign lesions and 11 cases of malignant lesions were confirmed by pathology.The accuracy,positive predictive value and negative predictive value of the sub-leaf shape and edge burr of the breast lesions were 82.61%,66.67%,86.49% and 86.96%,85.71 %,87.18% respectively.TIC showed:in type Ⅰ,all 17 cases were benign;In type Ⅱ,4 cases were benign and 2 cases were malignant;In type Ⅲ,9 cases were all malignant.The diagnostic accuracy of MRI for the benign and malignant breast lesions was 86.96%.The positive predictive value and negative predictive values were 81.82% and 96.88% respectively.Conclusion MRI can definitely estimate the potential character of lesion in FAB,and more accurately discriminate malignant and benign breast lesions.更多还原