PGR and metastatic malignant neoplasm in the lymph nodes: In Cox univariate analysis of DDFS, the following clinicopathological variables were related to prognostic information: lymph node metastases (+ vs. -: hazard ratio [HR], 5.5; 95% confidence interval [CI], 2.7–11), tumour size (>20 vs. ≤20 mm: HR, 4.9; 95% CI, 2.6–9.4), NHG (3 vs. 1: HR, 20; 95% CI, 2.7–147), ER (+ vs. -: HR, 0.39; 95% CI, 0.21–0.72), and PR, progesterone receptor (+ vs. -: HR, 0.43; 95% CI, 0.24–0.79).