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Gastric giardiasis.

C Doglioni1, M De Boni, R Cielo

  • 1Department of Surgical Pathology, Ospedale Civile, Feltre, Italy.

Journal of Clinical Pathology
|November 1, 1992
PubMed
Summary

Gastric giardiasis is rare, affecting 0.37% of patients. It is linked to chronic atrophic gastritis, intestinal metaplasia, and H. pylori, suggesting reduced stomach acidity is key for G. lamblia.

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Area of Science:

  • Gastroenterology
  • Parasitology
  • Pathology

Background:

  • Giardia lamblia typically infects the small intestine.
  • Gastric giardiasis is an uncommon presentation.
  • Understanding its prevalence and associations is important for diagnosis.

Purpose of the Study:

  • To determine the prevalence of gastric giardiasis in patients undergoing endoscopy.
  • To identify clinicopathological factors associated with gastric Giardia lamblia infection.

Main Methods:

  • Histological and immunocytochemical examination of 15,023 gastric biopsy specimens.
  • Electron microscopy for three cases.
  • Analysis of patient data from Feltre City Hospital (1986-1991).

Main Results:

  • Gastric giardiasis was found in 41 patients (0.37%).
  • All patients had symptoms like dyspepsia or pain; diarrhea was rare.
  • Gastric giardiasis was associated with chronic atrophic gastritis, intestinal metaplasia, and Helicobacter pylori infection.

Conclusions:

  • Gastric giardiasis is linked to conditions causing decreased gastric acidity.
  • Chronic atrophic gastritis with intestinal metaplasia and H. pylori may predispose to gastric G. lamblia.
  • Careful examination of gastric biopsies for G. lamblia is recommended in cases of chronic atrophic gastritis.

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