Fig. 2From: Clinical characteristics and prognostic analysis of postoperative recurrence or metastasis of low-risk gastrointestinal stromal tumorsKaplan-Meier survival curve of PFS in patients with gastrointestinal stromal tumors. A Primary site (Group A: stomach; Group B: no stomach). B Tumor size (Group A:tumor size<4cm; Group B: tumor size ≥ 4cm). C Ki-67 index (Group A: Ki67≤5%;Group B: Ki67>5%)Back to article page