title: [Pseudo tumoral gastric amyloidosis: a case report].
abstract: BACKGROUND
  Amyloidosis is an abnormal extracellular deposition of insoluble proteins, which is associated with an involvement of the gastrointestinal tract in 50 to 70% of cases. In primary amyloïdosis (light chain amyloïdosis), localized gastric involvement is a rare finding which can mimick malignancy.
  
  
  OBJECTIVE
  To elucidate the clinical, histological and therapeutic features of pseudo tumoral gastric amyloidosis via a rare report along with a review of related literatures.
  
  
  METHODS
  We report the case of a 56-year-old man, admitted with upper digestive outlet obstruction. Linitis plastica with lymph node involvement was suspected by gastroscopy, barium meal and endoscopic ultrasonography but was not confirmed by gastric biopsies. The patient was treated with total gastrectomy with lymph node dissection. Pathological examination demonstrated gastric and lymph nodes amyloidosis and no malignant tumor was found.
  
  
  CONCLUSIONS
  We propose that amyloidosis should be considered in the differential diagnosis of gastric tumors.
authors.affiliation: Service d'Anatomie et de Cytologie Pathologiques, Hôpital la Rabta, Tunis, Tunisie.
authors.forename: Haifa
authors.initials: H
authors.lastname: Nfoussi
authors.forename: Ines
authors.initials: I
authors.lastname: Chelly
authors.forename: Khadija
authors.initials: K
authors.lastname: Bellil
authors.forename: Nidhameddine
authors.initials: N
authors.lastname: Kchir
authors.forename: Slim
authors.initials: S
authors.lastname: Haouet
authors.forename: Moncef
authors.initials: M
authors.lastname: Zitouna
mesh_terms: D000686:Amyloidosis / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D017219:Gastric Outlet Obstruction / Q000209:etiology / Q000601:surgery; D006801:Humans; D008206:Lymphatic Diseases / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D013272:Stomach Diseases / Q000175:diagnosis* / Q000601:surgery; D013274:Stomach Neoplasms / Q000175:diagnosis