Fig. 2

Woman (60–70 years old) with PHBC treated by right mastectomy 12 years prior to study. A MLO and B CC Left surveillance mammograms show heterogeneously dense breast tissue (BI-RADS C) with normal, stable findings. C Axial 3D MIP at 2 min post contrast performed after mammograms shows right mastectomy with no chest wall abnormalities and an irregular 4.5 cm enhancing mass (circle) in the medial left breast reported as BI-RADS 4B. The second circumscribed mass in the lateral breast corresponded with a benign fibroadenoma (arrow). D Axial 2 min post contrast subtracted image demonstrates the spiculated enhancing mass in the upper medial quadrant of the left breast (circle). E Axial image from MRI biopsy demonstrates the needle sampling the mass (circle), diagnostic for pleomorphic lobular carcinoma in situ, which was confirmed at surgical excision to be associated with invasive lobular carcinoma