The treatment can be given directly into the vein or by mouth.
Chemotherapy enters the bloodstream and travels to all parts of the body to reach cancer cells that may have spread beyond the breast. A combination of drugs is used to increase the effectiveness of the treatment.
Chemotherapy may be given after a lumpectomy or mastectomy to help reduce the chance of breast cancer recurrence. Your doctor may also recommend a course of chemotherapy before surgery to shrink the tumor.
Learn more about chemotherapy at Washington Cancer Institute.