Fig. 1

Preoperative imaging of right and left breast lesions. Mammography (cranio-caudal view) revealed a mass in the middle outer portion of the right breast (a). No lesions were detected in the left breast on mammography (d). Ultrasonography showed a 59-mm hypoechoic mass with an unclear margin in the right breast (b), and an 18-mm hypoechoic lesion with an unclear margin in the left breast (e). Computed tomography (CT) with contrast revealed a 53-mm mass in the right breast (c). Several axillary lymph node metastases were detected, but no other metastasis, on CT. In the left breast, CT with contrast demonstrated a 34-mm mass but no other metastatic lesions (f)