Illustration of an endoscopic examination, a gastroscopy, on a black background: Via a camera, the mucosa of esophagus, stomach, and parts of the small intestine are examined. If necessary, a tissue sample can be extracted.
The camera tube (endoscope) is inserted via mouth and esophagus into the stomach, up to following parts of the small intestine. The goal is to find tissue changes like ulcers / cancer / (esophagal) varices.
