Abstract

We report two cases of <i>Helicobacter heilmannii</i> gastritis, in a 59-year-old woman and in a 61-year-old man. <i>Helicobacter heilmannii</i> is a spiral organism first observed in the gastric mucosa of dogs in 1881. Reports of a spiral bacterium morphologically distinct from Helicobacter pylori, found in human gastric mucosa, were first published in 1987.<sup>1</sup> This organism was referred to as Gastrospirillum hominis by the authors. A subsequent report by Heilmann and Borchard<sup>2</sup> of a series of patients harbouring a flagellated, helical, urease producing organism distinct from <i>Helicobacter pylori</i> led to the renaming of the organism to <i>Helicobacter heilmannii</i> in honor of Heilmann who died shortly after the report was accepted for publication. <i>Helicobacter heilmannii</i> is the most common non-pylori species in humans, with an estimated incidence of 0.3%<sup>1</sup> and typically produces a less severe gastritis and often less severe symptoms than Helicobacter pylori. It responds to conventional <i>Helicobacter pylori</i> eradication regimens.

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