US, UE, ABVS and histologic section image in a 41-year-old woman with invasive ductal carcinoma. (A) US image shows nonpalpable lesion. (B) ABVS image shows retraction phenomenon as “crater” sign (arrow). (C) UE image shows entire lesion as red, indicating a hard lesion with UE score of 5. (D) Hemotoxylin and eosin (H&E) image shows microstructure in tumor including cytoplasmic and nuclear vacuolation, clumping of nuclear chromatin (original magnification, × 200). US: Ultrasonography. ABVS: Automated breast volume scanner. UE: US elastography.