Investigation On Diagnostic Value Of Ultrasound BI-RADS In Grade3-5Breast Tumors

ObjectiveTo evaluate the diagnostic value of sonographic breast imaging reporting and data system (BI-RADS) categories3,4and5in breast tumors and correlation with pathology.Materials and methodsThe clinical records and sonographic findings of406women with412masses of the breast at our unit were retrospectively reviewed. All static images were reviewed by three radiologists independently; radiologists were blind to the histological study and categorized as BI-RADS3-5were evaluated. The sonographic findings were compared with the post-operative pathological results.ResultsA total of412masses of papillary lesions of the breast were identified,259(62.9%) were pathologically confirmed to be malignant and153(37.1%) to be benign. In all412lesions,129were BI-RADS grade3, and histopathology confirmed29(22.5%) were malignant,100(77.5%) were benign;133were BI-RADS grade4, and histopathology confirmed84(63.2%) were malignant,49(36.8%) were benign;150were BI-RADS grade5, and histopathology confirmed146(97.3%) were malignant,4(2.7%) were benign.The difference between malignant and benign tumors of BI-RADS3-5is statistically significant. The differences of pathological types between malignancy BI-RADS3,4and5were statistically significant(P<0.05); yet the statistical results of benign tumors were not significant(P>0.05). The differences of pathological differentiation of CIS and IDC categorized as BI-RADS3-5were not statistically significant(P>0.05).Comparing the IDC categorized as BI-RADS3or4with those categorized as BI-RADS5, the difference of the longest diameters were statistically significant(P<0.05). However, there is no statistical significance between those categorized as3and categorized as4(P>0.05).The malignant rates of tumors categorized as3,4and5were22.5%,63.2%and97.3%, respectively. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were83.4%,96.2%,97.3%,77.5%, respectively.ConclusionSonographic BI-RADS has high clinical value for breast tumors categorized as34and5. Malignancy BI-RADS3-5were related with pathology types, but benign tumors BI-RADS3-5were not related.IDC and CIS BI-RADS3、4、5were not related with pathological differentiation.