There are a number of preoperative tests and imaging that can be performed prior to diagnosis.
Check your breasts on a regular basis. There are five steps to a breast self-examination.21
There are four kinds of mammography:
Ultrasound uses sound waves to show pictures of the breast. Ultrasound can show the difference between fluid-filled cysts (usually not cancerous) and tumors.
Magnetic resonance imaging (MRI) uses magnetic fields instead of X rays to show very clear breast images and tumor size.
If a tumor is found on imaging, a biopsy is the only way to confirm breast cancer. A biopsy is the removal of tissue to examine cells. There are different types of biopsies.