MKI67 and neoplasm: No significant difference in terms of LDR risk could be observed between patients undergoing standard versus extended ET when they were categorized according to tumor size (Fig. 1), nodal involvement (Fig. 2), stage of disease (Figs. 3, 4), tumor grade (Fig. 5), Ki67 level (Fig. 6) and progesterone receptor status (Fig. 7).