You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is H. pylori have been implicated in all, except and explain in detail?
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 90%) ulcers.H. pylori infection was associated with a twofold increased risk of developing gastric cancer. There is also a strong association between mucosa-associated lymphoid tissue (MALT) lymphoma and H. pylori infection.Sabiston 20th edition pg: 1198