Fig. 3From: Risk stratification for predicting postoperative recurrence of gastric cancer by grade of venous invasionRecurrence-free survival of GC according to the grade of venous invasion. a GC without AC indication. b GC with AC indication. GC, gastric cancer; AC, adjuvant chemotherapy; v0, no venous invasion; v1, 1−3 invasions per glass slide; v2, 4−6 invasions per glass slide; and v3, ≥ 7 invasions per glass slide. Filling-type invasion in veins with a minor axis of ≥ 1 mm increased the grade by 1Back to article page