Stratification analysis for risk factors in lymph node metastasis
Among 181 EEC G3 patients, the general LNM rate was 16.7% (30 out of 181). With negative LVSI, CSI and AI, the LNM rate was 3.3% (3/92). When combined with single positive LVSI or CSI or AI, the LNM rate was 14.5% (8/55) or 28.6% (2 /7) or 50.0% (1/2) respectively. The LNM rate increased to 75.0% (9/12) when combined with both positive LVSI and CSI. Similarly, with positive LVSI and AI, the LNM rate reached to 60.0% (6/10). LNM rate of EEC G3 patients with positive LVSI, CSI and AI was 33.3% (1/3) (Table 4).