Fig. 16

MRI of post-partum DCIS. Images of a 33-year-old PABC patient (lactating cessation a week prior to the MRI) diagnosed with left breast DCIS are presented. The patient palpate a lump in the left breast during the third trimester of pregnancy and underwent breast US (not presented) which depicted a benign appearing 9 mm oval mass. Upon follow-up 3 months later, post-partum, focal US depicted irregular mass with calcifications. Further diagnostic workup included US-guided biopsy, mammography which revealed extremely dense breast with segmental distribution of suspicious micro-calcifications in the inner-lower quadrant (b and zoomed image c), as well as breast MRI (a) which showed the characteristic NME of DCIS along 42 mm, in agreement with the mammographic findings, on top of the moderate background enhancement (BPE 2)