Diagnosing triple-negative breast cancer doesnt take additional time compared to other forms of breast cancer.

To do a biopsy, tissues or fluid are removed from the breast area and examined under a microscope.

If a patients biopsy comes back positive, the next step is totest for hormone receptors.

Mature woman doing self breast exam at home

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Differential Diagnoses

There are many benign breast conditions that do not turn into triple-negative breast cancer.

Breastcancer.org.Risk of Developing Breast Cancer.

National Breast Cancer Foundation, Inc.Biopsy.

American Cancer Society.Breast cancer signs and symptoms.

30(1):388. doi:10.1007/s12032-012-0388-4

American Cancer Society.Triple-negative breast cancer.

Centers for Disease Control and Prevention.Diagnosing breast cancer.

National Breast Cancer Foundation, Inc.Diagnosis.

Susan G. Komen.Triple Negative Breast Cancer.