Background: Helicobacter pylori infection is common in patients with hyperplastic gastric polyps.
Objective: To study the effect of eradication of H. pylori on the clinical course of patients with hyperplastic gastric polyps.
Design: Single-blind, randomized, controlled trial.
Setting: University-based gastroenterology outpatient clinic.
Patients: 35 patients with H. pylori infection and hyperplastic gastric polyps at least 3 mm in diameter.
Intervention: Patients were randomly assigned to a treatment group (n = 17), which received a proton-pump inhibitor (omeprazole or lansoprazole), amoxicillin, and either clarithromycin or ecabet sodium, or to a control group (n = 18), which received no treatment.
Measurements: Patients underwent endoscopy before enrollment and 12 to 15 months after the end of treatment. Serum gastrin levels and titers of IgG to H. pylori were measured.
Results: In the treatment group, the polyps had disappeared by 3 to 15 months (average, 7.1 +/- 1.2 months) after the end of treatment in 12 of all 17 patients (71%) and in 12 of the 15 patients (80%) in whom H. pylori was eradicated. However, 12 to 15 months after the start of the study, no change in polyps or H. pylori status was seen in any controls (P < 0.001). Histologic findings of inflammation and activity, serum gastrin levels, and titers of IgG to H. pylori showed significant regression in the treatment group compared with the control group (P < 0.01).
Conclusions: Most hyperplastic polyps disappeared after eradication of H. pylori. Thus, eradication should be attempted before endoscopic removal is done in patients with hyperplastic gastric polyps and H. pylori infection.