Immunoscores (a,b) and mRNA (c) in breast cancer tissues. (a) Correlation of immunoscores for cyclooxygenase (COX)‐2 versus human epidermal growth factor receptor (HER)‐2 in ungrouped patients. (Spearman r = 0.575, P < 0.0001) (b) Comparison of lymphovascular density (LVD) and lymphovascular spaces (LVS) scores in node‐positive (+ve) versus ‐negative (−ve) tissues. (c) Spearman correlations of mRNA expression levels of human epidermal growth factor receptor (HER)‐2 versus COX‐2, vascular endothelial growth factor (VEGF)‐C, and lymphovascular endothelial hyaluron receptor (LYVE)‐1 in 10 ungrouped breast cancer tissue samples (HER‐2 versus COX‐2, r = 0.758, P = 0.015; HER‐2 versus VEGF‐C, r = 0.782, P = 0.011; HER‐2 versus LYVE‐1, r = 0.576, P = 0.088).