Subcategory classifications of Breast Imaging and Data System (BI-RADS) category 4 lesions on MRI

ConclusionCategory 4 lesions can be classified into three subcategories depending on the likelihood of malignancy. Lesions coexisting with category 5 or 6 lesions are more likely to be malignant.
Source: Japanese Journal of Radiology - Category: Radiology Source Type: research