Figure 2

Relapse-free survival analysis of 84 patients with primary GISTs. Kaplan-Meier curve analysis demonstrated a worse relapse-free survival for patients presenting with (A) gastrointestinal (GI) bleeding, (B) absent or low PTEN expression, and (C) Ki-67 > 1%. By including GI bleeding as an independent prognostic indicator, our re-modified risk stratification system (E) showed a better ability to predict recurrence in primary GISTs than modified NIH consensus criteria (D).