3D models of microcalcifications. (a) 3D model of the larger microcalcifications found in “benign 2”. The calcification at the bottom has a teacup shape as described in fibrocystic disease. At the top, a popcorn-like shape can be seen as described in fibroadenoma. (b) The same 3D model as in (a) viewed from another direction. (c) Example of a branching v-shaped microcalcification as a cribriform ductal carcinoma in-situ (“malignant 1”).