Epidemiological changes in premenopausal patients with breast cancer: a two-decade retrospective study

In the past decades there appears to have been a decrease in the mean age of presentation of breast cancer in premenopausal patients from developed countries, coinciding with an increase in maternal age at first delivery. The main objectives of this study were to determine the epidemiological features of premenopausal patients with primary breast carcinoma diagnosed in our unit for the past 20 years, and to evaluate any significant changes observed during this period.