Progesterone receptor expression is an independent prognostic variable in early breast cancer: a population-based study

Progesterone receptor (PR) expression assessment in early invasive breast cancer remains controversial. This study sought to re-evaluate PR expression as a potential therapeutic guide in early breast cancer; particularly in oestrogen receptor (ER)-positive, lymph node (LN)-negative disease. A population cohort of 1074 patients presenting to a single Cancer Centre over 4 years (2000–2004) underwent surgery for primary invasive breast cancer with...