Comparison of Lansoprazole and Famotidine for Gastric Ulcer by Endoscopic Ultrasonography

To compare the efficacy of lansoprazole and famotidine in the treatment of gastric ulcer, 24 patients with gastric ulcer were treated for 8 weeks. They were assessed by endoscopic ultrasonography (EUS), which provides cross-sectional images of the gastric wall as well as endoscopic images. Patients were randomly assigned to receive either lansoprazole 30 mg once daily (n = 12), or famotidine 20 mg twice daily (n = 12). The healing rate after 4 weeks of treatment was 80% in the lansoprazole group and 40% in the famotidine group. After 8 weeks of treatment, the respective healing rates were 100 and 72.7%. Healing to Sakita's S2 stage of scarring occurred significantly more often in the lansoprazole group than in the famotidine group after 4 weeks (50% vs. 0%; p < 0.05). After 4 weeks of treatment, the submucosal fibrous tissues detected by EUS were significantly less extensive in the lansoprazole-treated patients with deep ulcers (reaching the muscle layer or serosa) than in the famotidine-treated patients with deep ulcers (p < 0.01). These results suggest that lansoprazole may be more effective in ulcer healing than famotidine, particularly in patients with deep gastric ulcers.