What is MammoSite Targeted Radiation Therapy? Banner
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How It Works

View a demonstration of this procedure.

MammoSite 5-Day Targeted Radiation Therapy simplifies breast cancer treatment

1. Placement

MammoSite Targeted Radiation: Balloon Placement

After the breast cancer tumor is removed (lumpectomy), a small, soft MammoSite balloon attached to a thin tube (catheter) is placed inside the lumpectomy cavity through a small incision in the breast.

  • The balloon is “inflated” with saline solution so that it fits snugly into the cavity. It remains inflated during the 5-day treatment.
  • A small portion of the catheter remains outside the breast; this is secured to a cushioned gauze pad to prevent movement of the catheter.

2. Treatment

MammoSite Targeted Radiation: Breast Cancer Treatment
  • Treatment is planned by a radiation oncologist who will take images of the MammoSite balloon catheter in the breast and determine the amount of radiation needed.
  • During therapy, the portion of the catheter that remains outside your breast is connected to a computer-controlled High Dose Rate (HDR) machine that inserts a radiation “seed” to deliver the therapy.
  • Once therapy is complete, the seed is removed, the catheter is unplugged, and you will be free to return to your normal daily activities.
  • No radiation remains inside your breast in between treatments.

3. Removal

MammoSite Targeted Radiation: Catheter Removal
  • After 5 days of treatment, your MammoSite balloon catheter will be removed, usually on the last day of treatment.
  • The balloon is gently removed through the same incision made to place it.

MammoSite Targeted Radiation Therapy: Breast Cancer Patient

Delaine, Ft. Lauderdale, FL

“It’s fast. It doesn’t hurt.”

MammoSite Targeted Radiation Therapy: Breast Cancer Patient

Maryanna, San Antonio, TX

“I am soon to be a five-year survivor thanks to MammoSite!”

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