Why would a lump not show up on ultrasound?

Related questions

1. How much would a ultrasound cost?
2. Can I eat and drink before an ultrasound?
3. What happens during an abdominal ultrasound?
4. What are 3 uses of ultrasound?
5. How do I prepare for an ultrasound?
6. How do ultrasounds work?
7. How much water should I drink before an ultrasound?
8. Why do I have to drink water before an ultrasound?
9. Why do I need an ultrasound?
10. What an ultrasound can detect?

Tags

1. #palpable
2. #sometimes
3. #normal
4. #formed
5. #mammograms
6. #images
7. #either
8. #occasionally
9. #process
10. #mammogram
11. #cannot
12. #breast
13. #however
14. #benign
15. #tissue
16. #suggests
17. #ultrasound