title: A case of feline gastrointestinal eosinophilic sclerosing fibroplasia mimicking metastatic neoplasia.
abstract: METHODS
  A 7-year-old cat developed sporadic vomiting, reduced appetite, and weight loss over the previous 3 months.
  
  
  RESULTS
  Palpation revealed a large mid-abdominal mass and the cat had marked eosinophilia. The cat progressively lost weight over the next 7 weeks when euthanasia was performed.
  
  
  RESULTS
  Necropsy revealed a 3 cm diameter firm white intramural mass in the colon and another in the pylorus. Mesenteric and cranial mediastinal lymph nodes were firm, pale, and enlarged. Histopathological examination revealed foci of necrosis surrounded by thick dense collagen trabeculae and predominantly eosinophilic inflammation within the intestine and lymph nodes. Marked eosinophilic infiltration of the liver was also present.
  
  
  METHODS
  The lesions were consistent with gastrointestinal eosinophilic sclerosing fibroplasia (FGESF).
  
  
  CONCLUSIONS
  This is the first report of FGESF in a New Zealand cat and the first time lesions of FGESF have been observed in extra-abdominal tissues. Intestinal neoplasia can be clinically identical to FGESF and histopathology is required for differentiation. Evidence suggests that FGESF has a more favourable prognosis than intestinal neoplasia.
authors.affiliation: a Pathobiology , Institute of Veterinary, Animal and Biomedical Sciences, Massey University , Private Bag 11 222, Palmerston North , New Zealand.
authors.forename: J S
authors.initials: JS
authors.lastname: Munday
authors.forename: A W
authors.initials: AW
authors.lastname: Martinez
authors.forename: M
authors.initials: M
authors.lastname: Soo
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000473:pathology*; D002415:Cats; D005260:Female; D005767:Gastrointestinal Diseases / Q000473:pathology / Q000662:veterinary*
keywords: Cat; gastrointestinal eosinophilic sclerosing fibroplasia; intestinal tumour; tumour