why take biopsies during an endoscopy
A biopsy (small tissue sample) is often obtained during an upper endoscopy. A biopsy can distinguish between benign and malignant (cancerous) tissues, can detect the presence of Helicobacter pylori (a bacterium associated with most ulcers) and can detect Barrettâs esophagus (a potential precursor to esophageal cancer).pper endoscopy is a procedure that allows for the direct visualization of the lining of the upper part of your gastrointestinal tract, which includes the esophagus, stomach and duodenum (first portion of the small intestine).