Hyperprolactinaemia and breast disease as evaluated by xeromammography.

This report compares the xeromammographic patterns of 35 patients with hyperprolactinaemia and 70 (age-matched) normoprolactinaemic controls. It is shown that nulliparous patients have less frequent mammary dysplasia and more patterns of involution than the nulliparous controls. The groups of parous patients and parous controls were similar to each other and both had more involutions and less dysplasia than the nulliparous controls. Hyperprolactinaemia in parous women is not associated with any changes in the xeromammographic breast patterns as compared to parous controls. The changes described in hyperprolactinaemic patients can be understood in terms of their low oestrogenic activity.