A retrospective analysis of Estrogen Receptors in Breast Cancer and its comparison with national standards

Abstract

Estrogen receptor (ER) positive tumours are more common than ER negative tumours and tend to have a better prognosis. These tumours respond well to endocrine therapy as compared to ER negative tumours, thus avoiding the harmful effects of chemotherapy. Moreover, since ER positive tumours are associated with slow tumour growth and low histology grade, it increases the overall survival.