Bi rad 412/20/2023 ![]() ![]() The clinicopathological factors included age, T stage, N stage, BI-RADS categories of mammography or ultrasonography, menopause, palpability, estrogen receptor (ER) or progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), histologic type, histology grade, nuclear grade, and lymphovascular invasion. ![]() Of 115,319 patients registered in the KBCR, our study was a retrospective analysis of 44,184 patients diagnosed invasive breast cancers with prediagnostic malignancy probability in radiological findings such as BI-RADS 3, 4, or 5 between April 1983 and December 2014, using mammography or ultrasonography in the routine preoperative diagnostic process. Therefore, we investigated whether BI-RADS categories are associated with clinicopathological factors such as clinical characteristics and pathologic findings and breast cancer survival. Īlthough the BI-RADS classification serves as a tool for predicting the probability of breast cancer, there are few domestic studies on whether BI-RADS categories can predict the tumor characteristics and prognosis of patients with breast cancer. Based on the malignancy probability: BI-RADS 1 represents a negative (probability of 0%) BI-RADS 2 represents a benign (probability of 0%) BI-RADS 3 represents a probably benign (probability of <2%) BI-RADS 4 represents a suspicious abnormality (probability of 2%–95%) and BI-RADS 5 is highly suggestive of malignancy (probability of ≥95%)-the higher the BI-RADS category, the higher the probability for breast cancer. ![]() Among them, BI-RADS categories 1 to 5 reflect the malignancy probability before the diagnosis of breast cancer is made. The currently used BI-RADS classification is the 5th edition, which classifies BI-RADS into 7 categories, from 0 to 6. In 2003, BI-RADS was first used in ultrasonography. Since then, there have been 4 revisions in 1995, 1998, 2003, and 2013. BI-RADS was first used in mammography in 1993. The Breast Imaging Reporting and Data System (BI-RADS), established by the American College of Radiology, is a systematic and standardized scheme of the radiological findings of breast, which facilitates clear and consistent communication between clinicians and in patient follow-up. Mammography is mainly used for breast cancer screening. Its incidence is increasing one of the reasons is the increase in early detection of breast cancer due to the increase in screening using radiological equipment. Breast cancer is the commonest cancer in women, both worldwide and in the Republic of Korea. ![]()
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