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An esophagogastroduodenoscopy (EGD) is an outpatient procedure that is used to examine your esophagus, stomach, and the first part of your small intestine (called the duodenum). An EGD is sometimes called an upper endoscopy because it is used to evaluate the condition of your upper gastrointestinal tract.
An upper endoscopy, often referred to as endoscopy, EGD, or esophago-gastro-duodenoscopy, is a procedure that allows a physician to directly examine the upper part of the gastrointestinal (GI) tract, which includes the esophagus, the stomach, and the duodenum (the first section of the small intestine) (figure 1).