what is an esophageal  endoscopy
EGD - esophagogastroduodenoscopy. Esophagogastroduodenoscopy (EGD) is a test to examine the lining of the esophagus, stomach, and first part of the small intestine. EGD is done in a hospital or medical center. The procedure uses an endoscope. This is a flexible tube with a light and camera at the end. The procedure is done as follows:
Upper Gastrointestinal Endoscopy. Guide. An upper gastrointestinal (UGI) endoscopy is a procedure that allows your doctor to look at the inside lining of your esophagus , your stomach, and the first part of your small intestine (duodenum ). A thin, flexible viewing tool called an endoscope (scope) is used.