Gastroduodenal Intussusception Due to Pedunculated Polypoid Gastrointestinal Stromal Tumor / 대한소화기학회지

The gastrointestinal stromal tumor (GIST) is a mesenchymal tumor of the digestive tract showing differentiation along the line of interstitial cell of Cajal. The most GISTs in the stomach generally show the appearance of submucosal tumors. It is rare for GISTs to appear as a pedunculated polypoid lesion on endoscopy. We experienced a case of a 51-year-old man who had a pedunculated polypoid GIST. He was admitted to our hospital for nausea, vomiting, melena and severe anemia (hemoglobin 3.4 g/dL, hematocrit 10.8%). An upper endoscopy showed gastroduodenal intussusception due to a pedunculated polypoid mass. This report presents a rare case of endoscopically proven gastroduodenal intussusceptions due to pedunculated polypoid GIST in the stomach.

Comparison of Helicobacter pylori Eradication Rate in Patients with Non-ulcer Dyspepsia and Peptic Ulcer Diseases according to Proton Pump Inhibitors / 대한소화기학회지

BACKGROUND/AIMS: Conflicting results have been reported whether patients with non-ulcer dyspepsia (NUD) respond differently to Helicobacter pylori (H. pylori) eradication treatment compared with patients with peptic ulcer diseases (PUD). The aim of this study was to evaluate any difference in H. pylori eradication rates between patients with NUD and PUD according to each proton pump inhibitor (PPI). METHODS: From September, 2004 to April, 2007, we retrospectively reviewed 2,297 patients with NUD (1,050 patients) or PUD (1,247 patients) infected with H. pylori. All patients received a standard 1 week triple therapy comprising of one of the five PPIs (pantoprazole, esomeprazole, omeprazole, lansoprazole, rabeprazole), clarithromycin and amoxicillin. The follow-up H. pylori test was performed 4 weeks after the completion of therapy. RESULTS: There was no significant difference in the eradication rates between the two groups. In comparison of eradication rates according to PPI, omeprazole- based triple therapy group showed higher eradication rate than other groups in patients with NUD, but not in patients with PUD. CONCLUSIONS: This study failed to show any difference in H. pylori eradication rate between patients with NUD and PUD. There is no convincing evidence that the eradication rate may be affected by different PPI.

Correlations between the prevalence of colonic neoplasia and Helicobacter pylori infection / 대한내과학회지

BACKGROUND/AIMS: Helicobacter pylori infection is a recognized cause of chronic gastritis, peptic ulcer and gastric adenocarcinoma. However, both positive and negative associations with colorectal neoplasia have been reported. The aim of this study was to determine whether H. pylori infection is associated with an increased risk of colonic neoplasia in a Korean population. METHODS: We examined 1,590 subjects (1,297 men and 293 women) who underwent colonoscopy and serologic testing for IgG antibodies against H. pylori at the Health promotion Center in Kangbuk Samsung Hospital and at Samsung Medical Center. We compared the prevalence of colonic neoplasia in the seropositive subjects with that of the seronegative subjects. RESULTS: The overall prevalence of H. pylori in our study population was 56.2%. There were no significant differences of the baseline characteristics between the two groups. There was no statistically significant difference in the prevalence of colonic neoplasia between the seropositive group and the seronegative group (p=0.090). CONCLUSIONS: These findings suggest that there is no significant association between H. pylori infection and colonic neoplasia.