Fig. 3

Examples of breast incidental findings by BI-RADS category. a A 75-year-woman (Patient 1 in Table 3) underwent MR cholangiopancreatography. More than 50 % of the breast tissue was visible at abdominal MRI. A suspicious architectural distortion (white circle) was found in the outer quadrants of the left breast (BI-RADS RM 4). In the box is highlighted the breast findings. b Left full-filed digital mammography shows an area of architectural distortion (white arrow) in the outer quadrants. c Corresponding US image shows a mass with indistinct borders in the left breast at 2 o’clock position (15 mm diameter). The US-guided core needle biopsy confirmed a B5b lesion (invasive ductal carcinoma)