effect of lactation in breast cancer

The effect of radiotherapy on lactation is dose dependent, and the chance of lactating from the irradiated breast after the recommended 50 Gray is likely to be very low. Women who are able to lactate may produce insufficient milk from the treated breast,97 although the contralateral breast is likely to enlarge and sufficient milk may be produced to allow a baby to be fully breastfed. There are no data to make a recommendation about feeding from the treated breast
should milk be produced.