Neoadjuvant intra-arterial chemoembolization improves tumor pathological regression and survival in Borrmann type IV gastric cancer

Figure 4 Kaplan-Meier curves of overall survival and disease-free survival according to N-stage regression. A: Overall survival; B: Disease-free survival. Patients with N-stage regression had longer overall survival and disease-free survival than patients without N-stage regression (both log-rank P < 0.001). Vertical plus signs indicate censored observations. OS: Overall survival; DFS: Disease-free survival; N-reg (+): Positive N-stage regression; N-reg (-): Negative N-stage regression.