Fig. 2

a The hand-held ultrasound revealed an irregular and uneven 22 × 13 × 21 mm hypoechoic mass at 3 o 'clock in the right breast with an echo halo extending from the anterior edge of the breast area to the peribreast adipose layer (white arrow). b Color Doppler imaging showed some vascular distribution in the mass(white arrows). c Ultrasound elastography showed a Tsukuba stiffness score of 3 of the lesion (white arrows). d By ABUS, the lesion showed an irregular shape, an indistinct margin, heterogeneous hypoechoic with an echogenic halo (white arrows)