title: Granulomatous gastritis in Wegener's disease: differentiation from Crohn's disease supported by a positive test for antineutrophil antibodies.
abstract: BACKGROUND
  This report concerns the gastric manifestation of Wegener's granulomatosis in a 44 year old white female patient who initially presented with abdominal pain, vomiting, and iridocyclitis.
  
  
  RESULTS
  The clinical findings and the histopathological proof of granulomatous gastritis in the absence of necrotising vasculitis were initially considered to be indicative of a diagnosis of Crohn's disease showing isolated gastric involvement. A five month course of steroids resulted in temporary relief; thereafter the patient developed severe rhinitis with mucosal ulcerations. At this point biopsy of nasal mucosa disclosed the classic histopathological signs of Wegener's granulomatosis. A positive test for antineutrophil cytoplasmic antibodies (ANCAs) with a cytoplasmic pattern (c-ANCA) and antigenic specificity for proteinase 3 (PR-3) were found. The patient is in complete remission one year after diagnosis and treatment with steroids and cyclophosphamide.
  
  
  CONCLUSIONS
  Wegener's granulomatosis can also involve the gastrointestinal tract. Granulomatous inflammation of the stomach, although a rare finding and non-specific, should include Wegener's disease in the differential diagnosis. The histological proof of necrotising vasculitis is dependent on the depth of the biopsy and therefore can be easily missed. Differential diagnosis can be clarified by ANCA testing.
authors.affiliation: Department of Internal Medicine, Justus-Liebig-University Giessen, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Temmesfeld-Wollbrueck
authors.forename: C
authors.initials: C
authors.lastname: Heinrichs
authors.forename: A
authors.initials: A
authors.lastname: Szalay
authors.forename: W
authors.initials: W
authors.lastname: Seeger
mesh_terms: D000328:Adult; D019268:Antibodies, Antineutrophil Cytoplasmic / Q000097:blood*; D003424:Crohn Disease / Q000175:diagnosis* / Q000276:immunology; D003937:Diagnosis, Differential; D005260:Female; D014890:Granulomatosis with Polyangiitis / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D006801:Humans; D009297:Nasal Mucosa / Q000473:pathology; D012220:Rhinitis / Q000276:immunology / Q000473:pathology; D013270:Stomach / Q000473:pathology
chemical_list: D019268:Antibodies, Antineutrophil Cytoplasmic