BREAST DENSITY ACCORDING TO THE ACR CLASSIFICATION. Breast density ACR mammography BIRADS

ACR breast density refers to the classification of breast density according to the Breast Imaging Reporting and Data System (BI-RADS) developed by the American College of Radiology (ACR).

ACR breast density is classified into four categories:

• Category A: fatty tissue that represents less than 25% of the breast.

• Category B: fatty tissue that represents between 25% and 50% of the breast.

• Category C: fatty tissue that represents between 50% and 75% of the breast.

• Category D: fatty tissue that represents more than 75% of the breast.

ACR breast density is important because women with higher breast density have a greater risk of developing breast cancer.

Studies have shown that women with breast density category C or D have a four to six times greater risk of developing breast cancer compared to women with breast density category A or B.

Therefore, ACR breast density is a useful tool for physicians and patients to identify women at higher risk of breast cancer and take appropriate preventive measures, such as more frequent follow-up or additional screening tests.

ACR A - breast mostly composed of adipose content

ACR B - breast mostly composed of adipose tissue, with scattered foci of glandular mammary tissue

ACR C - breast mostly composed of glandular mammary tissue

ACR D - breast with glandular mammary content, with little or no adipose content

breast density ACR mammography BIRADS