Breasts are considered very dense if they contain a lot of fibro-glandular tissue (>75%) and little fat (Type 4), while they are classified as fatty if they contain mostly (> 75%) fat (Type 1). The next statement should indicate the breast type, which is classified based on the balance between fatty and fibro-glandular components into four types: predominantly fatty, patchy fibroglandular elements, heterogeneously dense breast and very dense breast (Figure 1). ![]() It should start with a statement indicating why the mammogram is being performed (screening or to follow-up a previously detected lesion) and the date/s of the previous exam/s to which the present one is being compared.It allows them to understand their breast imaging results and helps them participate in their treatment.Ī standard mammography report should follow a standard structure: While BI-RADS is mainly used by breast care specialists, a basic understanding of its significance is also important for patients and their care-givers. 2 Meanwhile, BI-RADS lexicons have also been developed from Breast Ultrasound and for Breast MRI, both now in their 2 nd edition. ![]() The BI-RADS mammography lexicon is presently in its 5 th edition and it is regularly revised based on experience and learning.
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