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Complete remissions of low-grade gastric MALT Iymphomas after the cure of H. pylori infection appear to be stable, although most patients display evidence of monoclonal B cells during follow-up. Whether these patients are truly cured of their Iymphomas remains to be determined.

Cure of Hp infection results in CCR in most patients. Histologic RD, B-cell monoclonality, and t(11;18) were present in a considerable number of CR patients. A watch-and-wait strategy is justified when close follow-up is guaranteed.

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In contrast to H. pylori infection the rare colonization of the gastric mucosa with H. heilmannii, mainly circumscribed and mostly in the antrum, induces a very much milder form of gastritis in the antrum and corpus, which may also be the reason for the rarity of concurrent erosions and ulcers. Whether the observed relatively frequent association of H. heilmannii infection and gastric MALT lymphoma is coincidental, and whether H. heilmannii gastritis is more commonly associated with MALT lymphoma than is H. pylori gastritis must be investigated in further studies.

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SUMMARY BackgroundThe clinical management of Helicobacter pylori infected patients who failed standard eradication therapies remains a challenge.

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