Fig 1.
ESD, endoscopic submucosal dissection; EGC, early gastric cancer.
Table 1.
Patient characteristics.
Table 2.
Lesion characteristics of 1st ESD.
Table 3.
Final pathology result of surgery group.
Table 4.
Clinical outcomes of the gastric cancers after 1st ESD according to additional treatment.
Fig 2.
Kaplan-Meier plots for overall survival (A), disease-specific survival (B), and disease-free survival (C) in all the patients. OS, overall survival; DSS, disease-specific survival; DFS, disease-free survival.
Fig 3.
Kaplan-Meier plots for overall survival (A), disease-specific survival (B), and disease-free survival (C) according to treatment type: observation group (green line) versus surgery group (blue line). Disease-free survival (residual + synchronous + metachronous tumor) (D) and disease-free survival (regional LN + distant metastasis) (E) in the observation group. OS, overall survival; DSS, disease-specific survival; DFS, disease-free survival; LN, lymph node.
Fig 4.
Comparison of time to recurrence between the two groups.
(P = 0.036) observation group (green) versus surgery group (blue).
Table 5.
Risk factors for residual tumor, residual tumor with depth ≥T2, synchronous tumor and regional LN metastasis of beyond expanded criteria of ESD for EGC.
Table 6.
Regional LN metastasis risk according to risk group as defined by the prognostic model.