Fig. 2

A 7.0-cm tumor in the upper outer quadrant and transition between outer quadrants, without typical inflammatory clinical findings (green circle) next to the residual nodule after neoadjuvant chemotherapy (pink circle) (a). Ultrasonography appearance of the residual nodule (corresponds to que pink circle in figure (a)) (b) and the new “tumor” area (corresponds to que green circle in figure (a)) (c). In d, the residual tumor shows frequent mitoses and high-grade cytology and architecture (HE, 400x)