H. pylori and gastric MALT received much attention, treatment is oriented by excellent guidelines with favourable and sustainable results. However some controversies still exist regarding H. pylori incidence in MALT, whether or not to eradicate the more aggressive large B-cell gastric lymphoma, H. pylori dependence and attitude to possible eradication, what is to be done with negative bacterial status, how to select and follow up of anti H. ...