Helicobacter pylori infection induces chronic inflammation and is the strongest known risk factor for gastric cancer. The genomes of H pylori are highly diverse and therefore bacterial virulence factors play…

Gastric cancers are a histologically heterogenous group of neoplasms arising from unique epidemiologic and molecular backgrounds. There is accumulating evidence that the intestinal type of gastric adenocarcinoma develops through a…

Gastric cancer is one of the major malignancies in the world. This article summarizes the current understanding of the worldwide burden of this disease, its geographic variation, and temporal trends….

This review provides a state of the art description of gastric cancer etiology, the infectious agent, host factors, the precancerous cascade, clinical aspects, and prevention strategies. The biology of Helicobacter…

Gastrointestinal endoscopy is a rapidly evolving field. Techniques in endoscopy continue to become more sophisticated, as do the devices and platforms, particularly in colonoscopy and endoscopic resection. This article reviews…

Optimization of training and teaching methods in colonoscopy at all levels of experience is critical to ensure consistent high-quality procedures in practice. Competency in colonoscopy may not be achieved until…

Colonoscopy is a relatively invasive modality for the diagnosis and treatment of colorectal disease and for the prevention or early detection of colorectal neoplasia. Millions of colonoscopies are performed each…

There is substantial indirect evidence for the effectiveness of colonoscopy in reducing colorectal cancer incidence and mortality. However, several recent studies have raised questions on the magnitude of effect for…