Subcategory classifications of Breast Imaging and Data System (BI-RADS) category 4 lesions on MRI.
Maya HondaMasako KataokaKosuke KawaguchiMami IimaKanae Kawai MiyakeAyami Ohno KishimotoRie OtaAkane OhashiMasakazu ToiYuji NakamotoPublished in: Japanese journal of radiology (2020)
Category 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.