Dense breast tissue can make a mammogram harder to read. Both dense tissue and many tumors show up as white on the scan, which can make small changes more difficult to see.
Sometimes, a doctor may suggest extra imaging, such as an MRI or Automated Breast Ultrasound, to get more information. You can talk with your doctor about whether this is right for you.
Why does my report say “Heterogeneously Dense” tissue (Category C or D)?
Reviewed by the Medical Editorial Board on
Medical Disclaimer
All medical content on this site is reviewed by our Medical Editorial Board.
This content is provided for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. Clinical decisions should always be made in consultation with a qualified healthcare professional. Read the full medical disclaimer here.
Related Content
- MRI Misdiagnosis: Common Errors and How to Avoid Them

- Radiology Report Second Opinion Faq´s: What Patients Ask

- How a Second Opinion Diagnosis Reveals Better Options

- MRI Second Opinion Made Simple: What You Need to Know

