A breast biopsy is preformed when suspected irregular growths in the breast require lab analysis to determine what type of cells are involved. During a biopsy a sample of breast tissue is taken to check a suspicious area found on a mammogram, ultrasound, or magnetic resonance imaging (MRI).
The good news is that 80% of women who have a breast biopsy do not have breast cancer.
There are several factors that help a doctor decide which type of biopsy to recommend. These include the appearance, size, and location of the suspicious area on the breast.