Fig 1.
Schematic protocol of this study.
Fig 2.
Histopathology of early gastric cancers with or without pre-existing adenoma.
(A) Representative image of the ex-adenoma group. Adenomatous components (left) were detected at the margin of the tubular adenocarcinoma (right) (Hematoxylin and eosin stain; original magnification, 200×). (B) Representative image of the de novo group. A sharp transition from the normal gastric mucosa (right) to tubular adenocarcinoma (left) was observed. No evidence of gastric adenoma was found in its vicinity.
Table 1.
Baseline characteristics of patients with early gastric cancers treated with endoscopic submucosal dissection.
Table 2.
Further analysis of H. pylori infection considering the severity of atrophic gastritis.
Table 3.
Comparison of endoscopic characteristics of early gastric cancers between the two groups.
Table 4.
Comparison of pathologic features between the two groups.
Table 5.
Follow-up results of the two groups.
Table 6.
Characteristics of metachronous gastric cancer in two groups.
Fig 3.
Kaplan-Meier curve of metachronous gastric cancer recurrence.
There were no statistically significant differences in the metachronous cancer recurrence rate between the ex-adenoma group and the de novo group (P = 0.688).