Radiation Therapy
Radiation therapy (RT) is a targeted treatment that uses high-energy X-rays or particles to destroy cancer cells and reduce recurrence risk. It’s a critical component of breast cancer care, often used after surgery (lumpectomy or mastectomy) or for advanced cases.
When Is Radiation Used?
After Breast-Conserving Surgery (Lumpectomy)
- Standard for most patients to kill residual cancer cells.
- Reduces local recurrence risk by 50-70%.
- Required unless: Very low-risk DCIS or elderly with small, hormone-sensitive tumors.
After Mastectomy
- Recommended if:
- Tumor >5 cm or lymph node involvement.
- Positive surgical margins (cancer cells at edge).
- Aggressive subtypes (e.g., triple-negative, HER2+).
For Advanced/Metastatic Cancer
Palliative RT: Relieves pain from bone/lung/brain metastases.
What to Expect During Treatment
Before RT
✔ Simulation Session: CT scan to map treatment area.
✔ Tattoo Marks: Tiny dots to align radiation beams.
During RT (Each Session ~15-30 Mins)
- Painless (like an X-ray).
- Weekly check-ins with the radiation oncologist.
After RT
- Fatigue, skin redness (like sunburn), and mild swelling are common.
- Most side effects fade within 2-6 weeks after treatment.
