[Lymphocytic gastritis--a rare disorder of the gastric mucosa].
Lymphocytic gastritis, first described by Haot et al. in 1986, is a very rare form of gastritis (0.8-1.6% of cases) with unclear pathogenesis. On endoscopy, lymphocytic gastritis may present either a normal appearance, such as gastritis varioliformis with multiple elevated chronic erosions in the corpus and fundus, or as a giant fold gastritis in the corpus and fundus. This type of gastritis is diagnosed histologically based on an accumulation of intraepithelial lymphocytes (more than 25/100 epithelial cells) in the surface cells of the gastric mucosa. Its etiopathogenesis is currently thought to be a sprue-associated reaction or an atypical reaction to Helicobacter pylori infection. Some studies report the lymphocytic gastritis in almost 45% of cases of sprue, with the gastritis regressing in response to a gluten-free diet, while others report a correlation of lymphocytic gastritis with serologically and/or histologically confirmed H. pylori infection, with the lymphocytic gastritis being cured by H. pylori eradication treatment in a high percentage of the cases. It is possible that a similar abnormal immune reaction to an inflammatory agent underlies both pathological entities, sprue and lymphocytic gastritis--in the one case gluten and in the other H. pylori--which would mean that sprue-induced and H. pylori-induced forms of lymphocytic gastritis exist side by side.
Institut für Pathologie, Klinikum Bayreuth, 95445 Bayreuth. pathologie@t-online.de
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H
Müller
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Rappel
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Volkholz
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Stolte
D002446:Celiac Disease / Q000150:complications / Q000473:pathology; D005753:Gastric Mucosa / Q000276:immunology / Q000473:pathology*; D005756:Gastritis / Q000453:epidemiology / Q000276:immunology / Q000473:pathology*; D016481:Helicobacter Infections / Q000150:complications / Q000188:drug therapy / Q000473:pathology; D016480:Helicobacter pylori; D006801:Humans; D008214:Lymphocytes / Q000276:immunology / Q000473:pathology*