09/05/2026
Let's talk about breast cancer screening guidelines.
1) Standard breast cancer screenings begin with an annual mammogram when you turn 40.
2) Dense breast tissue changes the screening recommendations. About 40% of women have dense breasts. Mammography misses 20% of cancers in dense tissue, unlike MRI. Ask your doctor: "What's my density?"
3) Annual breast MRIs are indicated for women who:
- have ensity Class C or D (look at your mammo report for this)
- BRCA1/2 positive (or high-risk family)
- Prior chest radiation (Hodgkin's)
- Lobular carcinoma in situ (LCIS) history
- 20%+ lifetime risk (Gail/Tyrer-Cuzick)
- Personal history of breast cancer
4) MRI does not replace mammogram. MRI is supplemental, not standalone. Combine with mammography for best detection.
5) Talk to your doc about YOUR risk profile. Dense tissue? Family history? Personal history? That changes the plan.
Get screened. Stay informed.
ACR guidline update:
https://linkinghub.elsevier.com/retrieve/pii/S1546-1440(25)00498-3