TITLE: PREVALENCE OF BREAST CANCER IN BI-RADS CATEGORY 3 LESIONS
Abstract
Objective:
To determine the prevalence of breast cancer in patients found on mammography to have the Breast Imaging Report and Data System (BI-RADS) category 3 lesions.
Materials and methods:
1,704 women who underwent mammography during the one-year period from January 1st to December 31st 2001 were determined to have BI-RADS category 3 lesions. Of these, 1,100 had medical records available for review. Patients were included in the study if biopsies of the lesions were available, or if not, the followup time was at least two years. Presence of breast cancer was defined as cancer detected within two to three years after the initial mammogram at the site of the initial mammographic lesion. Patients not biopsied after two years were determined not to have breast cancer at the time of initial mammogram.
Results:
397 patients fulfilled the inclusion criteria. Biopsies were performed on 51 (12.8%) patients. Invasive breast cancer was found in two patients (2 of 397, 0.5%) and lobular carcinoma in situ in one.
Conclusion:
Our data suggest that the prevalence of breast cancer in patients with BI-RADS category 3 mammogram is extremely low (0.5%)
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References
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