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Xanthogranulomatous gastritis with pseudosarcomatous changes.

Hitoshi Kubosawa1, Kentaro Yano, Kenji Oda

  • 1Department of Pathology, Aoba Hospital, Chiba, Japan. hitoshi-kubosawa@city.chiba.jp

Pathology International
|May 12, 2007
PubMed
Summary

This case report details xanthogranulomatous inflammation in the gastric wall, a rare condition that mimicked malignancy. Recognizing its unique features is crucial to prevent misdiagnosis and unnecessary surgery.

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Area of Science:

  • Gastroenterology
  • Pathology
  • Oncology

Background:

  • Xanthogranulomatous inflammation is a rare inflammatory condition.
  • Gastric wall involvement is exceptionally uncommon.
  • Distinguishing it from mesenchymal malignancies can be challenging.

Observation:

  • A 77-year-old male presented with rapidly enlarging submucosal gastric nodules.
  • Initial biopsy revealed spindle cells with atypical features, suggesting malignancy.
  • Immunohistochemistry did not resolve the diagnostic uncertainty.

Findings:

  • Post-surgical examination revealed spontaneous regression of lesions.
  • Microscopic analysis confirmed xanthogranulomatous inflammation with foamy histiocytes and multinucleated giant cells.

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  • The initial diagnosis of malignancy was erroneous.

    • Implications:

    • Accurate recognition of xanthogranulomatous inflammation is vital to avoid overdiagnosis of gastric malignancy.
    • Understanding this entity's morphology can prevent unnecessary surgical interventions.
    • Further research into its pathogenesis may improve diagnostic strategies.