**3. Limitations and artefact**


**Figure 5.** *Typical strain elastography of liquid structure: BGR sign (blue/green/red).*

5.Lastly some old, very fibrous fibroadenomas may seem 'hard' but are without any hypervascularisation, and without very suspicious ultrasound signs. A perfect mastery of the technique of positioning the 'elasticity boxes' is essential for their correct analysis.
