1. Relation of H pylori infection to upper GI tract conditions
Relation of H pylori infection to upper GI tract conditions. The figure shows that most patients with gastroduodenal ulcers or gastric lymphoma or adenocarcinoma have also been infected with H pylori. Note, however, that the circles are not to scale, because gastric cancer occurs in less than 1% of those infected with H pylori. Note, too, that relationships among the different conditions are more complex than depicted. Despite that patients with cancer often have a prior history of ulcers, as shown in Figure 13–19, patients with a history of H pylori infection (that causes ulcers) are less likely to develop cancer. (Redrawn, with permission, from Calam J et al. Pathophysiology of duodenal and gastric ulcer and gastric cancer. BMJ. 2001;323:980.)
Source: Gastrointestinal Disease, Pathophysiology of Disease: An Introduction to Clinical Medicine, 7e
Citation: Hammer GD, McPhee SJ. Pathophysiology of Disease: An Introduction to Clinical Medicine, 7e; 2013 Available at: Accessed: October 21, 2017
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