MyBCTeam

That's a really important question, and it's one many people with DCIS wrestle with after completing surgery and radiation.

Hormone therapy (like tamoxifen) is typically offered after lumpectomy and radiation when a DCIS tumor is hormone receptor-positive (ER+ or PR+). It's not mandatory, and some people do choose to skip Show Full Answer

That's a really important question, and it's one many people with DCIS wrestle with after completing surgery and radiation.

Hormone therapy (like tamoxifen) is typically offered after lumpectomy and radiation when a DCIS tumor is hormone receptor-positive (ER+ or PR+). It's not mandatory, and some people do choose to skip it — but it's worth understanding the trade-offs. Here's what the research generally shows about recurrence risk after lumpectomy:

- Lumpectomy alone: roughly 25–30% chance of recurrence
- Lumpectomy + radiation: up to 15% chance of recurrence
- Adding hormone therapy can reduce that risk further, especially for hormone receptor-positive DCIS

High-grade DCIS also carries a higher recurrence risk than low-grade DCIS. Many MyBCTeam members have shared similar questions and experiences about weighing the benefits of hormone therapy against its side effects. It's a very personal decision.

The best step is to have an open conversation with your oncologist about your specific tumor grade, hormone receptor status, and personal risk tolerance before deciding. You deserve all the information to make the choice that's right for *you*.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

Ductal Carcinoma In Situ: Your Guide