<prompt> H. pylori is associated with what percentage of gastric ulcers?10305070  <response>: H pylori infection is almost always present in the setting of active chronic gastritis and is present in most patients with duodenal 80 to 95 and gastric 60 to 90ulcers. Most patients with gastric cancer have current or past H. pylori infection.There is also a strong association between mucosa-associated lymphoid tissue MALTlymphoma and H. pylori infection.Sabiston 20e pg: 1223 