Mammographies, like any x-ray, do not contraindicate breastfeeding because the radiation neither stays in the breast nor is excreted in the milk. Breastfeeding, as with small or very large breasts, can make reading a mammography difficult (Robbins 2011, Gregl 1977), in which case ultrasound can be used (Sabate 2007).There is not always an increase in density or reading difficulties in breastfeeding mothers (Swinford 1998).Emptying the breast (breastfeeding) just before can help to reduce the discomfort of the examination and facilitate its reading. Mammographies do not alter prolactin levels (Saraç 2008). The different contrasts for these explorations (iodized or not) are compatible with breastfeeding because they are inert, metabolize quickly without releasing iodine, are not excreted in milk and are not absorbable orally (Cova 2014, Tremblay 2012, Wang 2012, Newman 2007, Webb 2005, Nielsen 1987). Following a radiological examination, even with iodinated contrast or not, it is not necessary to wait before breastfeeding. See below the information of these related groups: X-Ray Contrast Media, Iodinated. ATC V08A X-Ray Contrast Media, Non-Iodinate. ATC V08B