Fig. 4

Disease specific survival according to independent prognostic factors in the 78 patients. a N1/2 vs N0. b LV invasion positive (+) vs LV invasion negative (−). c Non-curative resection vs curative resection d High TB vs Low TB. In all comparison according to each independent prognostic factor, patients with each factor had significantly poor survival compared to those without it. DSS in patients with high TB did not show significantly difference compared to DSS in unresected patients