Endoscopy (EGD)
Endoscopy Common Procedure Examines Esophagus, Stomach, Duodenum Endoscopy, also known as esophagogastroduodenoscopy or EGD, is a common procedure doctors use to examine the lining of the esophagus (swallowing tube), stomach, and duodenum (beginning of the small intestine). Endoscopy is most often done in the doctor’s office or hospital outpatient unit by a highly trained physician …