[Gastric ulcer suspected of being a carcinoma part 2].

Differentiation between pseudoneoplastic regenerative epithelium and gastric carcinoma can be challenging. In cases with pseudoneoplastic regeneration, so-called lateral expansion of tubules and changing of nuclear rows within one gland should not be present. The gastritis status is of particular significance as gastric cancer is a rare occurrence without Helicobacter pylori infections.