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Gastrointestinal Standardization Project

The Gastrointestinal Standardization Group has a goal of obtaining a world-wide standard for the histopathological evaluation of the gastrointestinal tract of dogs and cats. This standardization project will provide a wide range of benefits including uniform diagnosis of disease, staging of disease, and the subsequent development of controlled clinical trials for the treatment of gastrointestinal disorders.

Our Members

  • Convener: Dr Robert Washabau, University of Pennsylvania, USA.
  • Dr Thomas Bilzer, University of Dusseldorf, Germany.
  • Dr Michael Day, University of Bristol, UK.
  • Dr Grant Guilford, Massey University, New Zealand.
  • Dr Ed Hall, University of Bristol, UK.
  • Dr Albert Jergens, Iowa State University, USA.
  • Dr Joanne Mansell, Texas A&M University, USA.
  • Dr Takeo Minami, Histo-Vet, Pet-Vet, Yokohama, Japan.
  • Dr Brian Wilcock, University of Guelph/HistoVet, Canada.
  • Dr Michael Willard, Texas A&M University, USA.

Reporting Forms

The upper and lower GI endoscopy report forms linked below, represent the work of the WSAVA Working Group on GI Histopathology. The group recognized early the need to also standardize endoscopic examination and sampling of the GI tract to ensure the highest procedural diagnostic yield. These endoscopy report forms help address this, namely that endoscopic examination is complete and thorough. Ongoing work is looking at the number of mucosal biopsies needed to ensure diagnosis of different lesions as well as the effect of quality of endoscopic biopsy on the likelihood of diagnosis. The GI Standardization Group hope that we will soon have standards of histological interpretation based upon an analysis of naturally occurring case clinical features.