St. Anthony’s Cancer Care Center

Chemotherapy and Radiation

As part of your breast cancer treatment, your doctors may have recommended chemotherapy and radiation. Working as a multidisciplinary team, our breast cancer physicians will create a personalized treatment plan for you, based on the latest research on breast cancer.


Chemotherapy uses powerful drugs to destroy cancer cells. It affects your entire body, which can lead to unpleasant side effects. At St. Anthony’s Cancer Care Center, we help you manage the side effects of chemotherapy during your treatment. Chemotherapy is often used following surgery to destroy any remaining cancer cells and reduce the risk of the cancer recurring. It can also be used prior to surgery in order to shrink the tumor as much as possible and make it easier to remove, called neoadjuvant chemotherapy. Learn more about chemotherapy at St. Anthony’s Cancer Care Center.

Radiation Therapy

Radiation therapy, or radiotherapy, uses high-powered beams of radiation to target and destroy the cancer cells. Like chemotherapy, it is a systemic therapy, meaning it affects your entire body. Radiation therapy is often recommended to people following a lumpectomy, in order to destroy any remaining cancer cells following the surgery. Even patients who underwent a mastectomy may receive radiation therapy, since it is impossible to surgically remove every cell of breast tissue.

Radiation therapy may be used for patients with metastatic breast cancer, which is when the cancer spreads to other parts of your body. Radiation therapy can help target the specific areas where the cancer has spread and relieve symptoms and pain. Learn more about radiation therapy at St. Anthony’s Cancer Care Center.

MammoSite®  Targeted Radiation Therapy

At St. Anthony’s Cancer Care Center, we offer the revolutionary MammoSite® targeted radiation therapy. Following a lumpectomy, your doctor inserts a small MammoSite balloon catheter inside the lumpectomy cavity. Through this precisely placed balloon, you receive targeted radiation therapy. The radiation is carefully planned and targeted to hit only the affected area, so you can safely receive a high dosage. After five days of therapy, the catheter is removed.