Fig. 6

Growing fibroadenoma during lactation. DCE-MRI subtracted images of a 26 years BRCA 1 carrier scanned twice within 18 months of routine surveillance, before conception and during lactation are presented. On baseline MRI (a), a 1.3 cm well-defined enhancing oval mass is visible on top of minimal background parenchymal enhancement (BPE 0). Yet, on follow-up during lactation, a 1.8 cm is hardly visible on DCE, due to the marked physiological BPE (grade 3) (b). The lesion enlargement and a personal history of phyllodes tumor prompt a US-guided biopsy which reassured fibroadenoma histology