Regression of gastric endoscopic submucosal dissection induced polypoid nodular scar after Helicobacter pylori eradication: A case report

Figure 1 Endoscopic images. A: A gastric dysplasia at antrum; B: Iatrogenic gastric ulcer after endoscopic submucosal dissection.

Figure 2 Endoscopy. A: Polypoid nodular scar at previous endoscopic submucosal dissection site after 3 mo; B: Aggravation of polypoid nodular scar after 1 year; C: Decreased in size of the polypoid nodular scar, 1 year after Helicobacter pylori eradication; D: Regression of polypoid nodular scar, 2 year after Helicobacter pylori eradication.

Figure 3 Endoscopic biopsy. A: Histologic finding of poypoid nodular scar, 3 mo after endoscopic submucosal dissection. Gastric hyperplastic polyp. This polyp shows tortuous distorted and dilatated glands, abundant lamina propria. There is no evidence of dysplasia (hematoxylin and eosin, ×100); B: Histologic finding of polypoid nodular scar, 1 year after endoscopic submucosal dissection. Helicobacter pylori were identified within foveolar epithelium (arrow) (hematoxylin and eosin, ×400).