2. Introduction:
Adequate collection& handling of tissue samples during endoscopy is
fundamental in diagnosing pathology of the digestive system.
The aim of this guideline was to make evidence-based recommendations on
the indications& protocols for endoscopic tissue sampling for the most
common conditions in the upper& lower gastrointestinal tracts &the
hepatopancreatobiliary (HPB) tract (the lower GIT will be covered in Part
2 published separately).