What tests are used to detect breast cancer? and should i be worried about the masses that were found?

Mammogram: Mammogram and ultrasound are the most common tests. There are many masses seen on these tests that are not cancerous. A biopsy is the definitive way to diagnosis a cancer. If a biopsy is recommended, please follow through with the recommendations. 80% of all biopsies performed have benign, noncancerous results.

Lumps in the breast : Commonly used tests to detect breast cancer include ...Mammography which is an x-ray of the breast, ultrasound of the breast and rarely MRI of the breast. A biopsy of the lump is the only way to confrim the final diagnosis of cancer. More than 80% of the breast lumps turn out to be benign on further testing.