BEZMIALEM SCIENCE, vol.3, no.2, pp.29-32, 2015 (ESCI)
Objective: Breast carcinomas positive for the estrogen receptor (ER+) but negative for the progesterone receptor (PR-) have unfavorable prognostic features and are resistant to tamoxifen therapy. The goal of this study was to highlight the significance of PR-breast carcinomas.