Breast cancer is suspected after a clinical breast exam which is positive for lumps or unusual changes with the breasts and armpits. A diagnosis is made after extensive testing including imaging tests (mammogram, ultrasound), breast biopsy, blood chemistry tests, and genetic tests. After a diagnosis is made, further testing is done to characterize the breast cancer. For example, tests for progesterone/estrogen receptor density and cancer metastasis are completed to personalize treatment options.[1]
How is breast cancer diagnosed?
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•Last Updated: May 16, 2025
Breast cancer is diagnosed after a clinical breast exam that reveals lumps or unusual changes, followed by extensive testing such as imaging tests, biopsies, and blood tests. Additional tests are conducted to characterize the cancer and tailor treatment options.