**4.4 Better analysis of the zones of micro-calcifications detected through mammography**

The vast majority of micro-calcifications are badly identified in echography. Elastography may allow a study of the zones targeted through the radiological examination as containing micro-calcifications. Ultrasound evidences the zones of intraductal or lobular epithelial proliferation (**Figure 8**).

#### **Figure 8.** *SWE non evident 2D malignant lesion =148 kPa.*

Colour Doppler (ultra fast, angio-plus Doppler) coupled with 3D imagery allows a reconstruction of lobar anatomy with its possible pathological modifications, but it is obvious that it is impossible to distinguish simple epithelial proliferation from florid hyperplasia, from a case of CIS in situ or from a millimetric invasive cancer at its very beginning.

Echography coupled with elastography enables one to select a risk zone (to be monitored or punctured) with or without micro-calcifications (**Figures 9**–**11**).
