A breast biopsy is a procedure to remove a sample of breast tissue for testing. The tissue sample is sent to a lab, where doctors who specialize in analyzing blood and body tissue (pathologists) examine the tissue sample and provide a diagnosis.

A breast biopsy might be recommended if you have a suspicious area in your breast, such as a breast lump or other signs and symptoms of breast cancer. It can also be used to investigate unusual findings on a mammogram, ultrasound or other breast exam.

The results of a breast biopsy can show whether the area in question is breast cancer or if it’s not cancerous. The pathology report from the breast biopsy can help your doctor determine whether you need additional surgery or other treatment.