Upper endoscopy, also called esophagogastroduodenoscopy (EGD), is a procedure that uses a lighted, flexible endoscope to see inside the upper gastrointestinal (GI) tract. The upper GI tract includes the esophagus, stomach and duodenum — the first part of the small intestine.
Please visit these resources for more information:
Upper Endoscopy Procedure. 2010. The Cleveland Clinic.
Digestive Problems and Upper Endoscopy, 2010, WebMD.
Upper GI Endoscopy. NIH Publication No. 09–4333, May 2009, National Digestive Disease Information Clearinghouse (NDDIC).