Table 1.
Summary of the results of this study: MRI findings are stratified by conventional imaging findings, clinical presentation, and ACR breast composition.
Resulting cancer prevalence, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) considering BI-RADS 4 and 5 as positive and BI-RADS 1–3 as negative MRI results.
Fig 1.
ROC plot of BI-RADS ratings against the reference standard.
At a cut-off of >BI-RADS 3, the sensitivity and specificity were 96.4% and 92.4%, respectively. In addition, at a cut-off of >BI-RADS 2 the sensitivity and specificity were 100% and 70.3%, respectively.
Fig 2.
A 52-year-old patient referred for problem-solving due to newly diagnosed architectural distortion in the left breast (A; white circles on mammography images). 3T contrast-enhanced MR imaging (B; top: T2w image, middle: early contrast-enhanced image, bottom: late contrast-enhanced image) shows the architectural distortion (white circle) demonstrating only mild background enhancement. The lesion was classified as BI-RADS 2, definitely benign. Follow-up of two years did not reveal malignancy.