Esophagogastroduodenoscopy (EGDS) is an endoscopic examination that allows the doctor to examine in detail the lining of the upper gastrointestinal tract (esophagus, stomach, and duodenum) using a small-diameter flexible endoscope inserted into the stomach through the mouth and esophagus.
During the examination, a small camera on the endoscope captures and transmits the picture to the screen, the doctor examines the mucous membranes and looks for signs of pathology. If tumor processes and mucosal modifications are detected, a piece of tissue (biopsy) is taken for further histological examination.
