Fig. 2

Imaging findings. a, b Mammography revealed a well-demarcated huge mass occupying the entire left breast (Breast Imaging Reporting and Data System category 3). a Medio-lateral oblique view; b cranio-caudal view. c Ultrasound showed two giant, well-demarcated, isoechoic lesions in the left breast, with homogeneous tumor parenchyma. d, e Contrast-enhanced computed tomography showed two well-demarcated masses in the left breast. Arrow indicates upper-inner lesion; arrowheads indicate lateral lesions. d Axial view; e sagittal view