Figure 1.

Cribriform intraductal carcinoma in situ (nonhigh grade). Microcalcifications (b) that are amorphous and indistinct in microradiography and in conventional specimen radiography (a). Histological evidence of gravel-like calcifications (arrow in (c)). In the histological as well as the microradiographic image, the calcifications have not yet condensed to form larger structures compared to Figure 2.